diff --git a/.cproject b/.cproject
index 0b577ed0..018004d6 100644
--- a/.cproject
+++ b/.cproject
@@ -3,9 +3,9 @@
     	
     <storageModule moduleId="org.eclipse.cdt.core.settings">
         		
-        <cconfiguration id="cdt.managedbuild.toolchain.gnu.base.355361470">
+        <cconfiguration id="cdt.managedbuild.toolchain.gnu.base.1826109495">
             			
-            <storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="cdt.managedbuild.toolchain.gnu.base.355361470" moduleId="org.eclipse.cdt.core.settings" name="Default">
+            <storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="cdt.managedbuild.toolchain.gnu.base.1826109495" moduleId="org.eclipse.cdt.core.settings" name="Default">
                 				
                 <externalSettings/>
                 				
@@ -29,45 +29,27 @@
             			
             <storageModule moduleId="cdtBuildSystem" version="4.0.0">
                 				
-                <configuration buildProperties="" description="" id="cdt.managedbuild.toolchain.gnu.base.355361470" name="Default" optionalBuildProperties="" parent="org.eclipse.cdt.build.core.emptycfg">
+                <configuration buildProperties="" id="cdt.managedbuild.toolchain.gnu.base.1826109495" name="Default" parent="org.eclipse.cdt.build.core.emptycfg">
                     					
-                    <folderInfo id="cdt.managedbuild.toolchain.gnu.base.355361470.1146655474" name="/" resourcePath="">
+                    <folderInfo id="cdt.managedbuild.toolchain.gnu.base.1826109495.948905563" name="/" resourcePath="">
                         						
-                        <toolChain id="cdt.managedbuild.toolchain.gnu.base.381030851" name="Linux GCC" superClass="cdt.managedbuild.toolchain.gnu.base">
+                        <toolChain id="cdt.managedbuild.toolchain.gnu.base.2146785907" name="Linux GCC" superClass="cdt.managedbuild.toolchain.gnu.base">
                             							
-                            <targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.GNU_ELF" id="cdt.managedbuild.target.gnu.platform.base.420133749" name="Debug Platform" osList="linux,hpux,aix,qnx" superClass="cdt.managedbuild.target.gnu.platform.base"/>
+                            <targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.GNU_ELF" id="cdt.managedbuild.target.gnu.platform.base.571104867" name="Debug Platform" osList="linux,hpux,aix,qnx" superClass="cdt.managedbuild.target.gnu.platform.base"/>
                             							
-                            <builder id="cdt.managedbuild.target.gnu.builder.base.2101091589" keepEnvironmentInBuildfile="false" managedBuildOn="false" name="Gnu Make Builder" superClass="cdt.managedbuild.target.gnu.builder.base"/>
+                            <builder id="cdt.managedbuild.target.gnu.builder.base.1697442477" managedBuildOn="false" name="Gnu Make Builder.Default" superClass="cdt.managedbuild.target.gnu.builder.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.archiver.base.663680588" name="GCC Archiver" superClass="cdt.managedbuild.tool.gnu.archiver.base"/>
+                            <tool id="cdt.managedbuild.tool.gnu.archiver.base.1428095550" name="GCC Archiver" superClass="cdt.managedbuild.tool.gnu.archiver.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.cpp.compiler.base.457979028" name="GCC C++ Compiler" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.base"/>
+                            <tool id="cdt.managedbuild.tool.gnu.cpp.compiler.base.175800288" name="GCC C++ Compiler" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.c.compiler.base.418929804" name="GCC C Compiler" superClass="cdt.managedbuild.tool.gnu.c.compiler.base">
-                                								
-                                <inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.1415284728" superClass="cdt.managedbuild.tool.gnu.c.compiler.input"/>
-                                							
-                            </tool>
+                            <tool id="cdt.managedbuild.tool.gnu.c.compiler.base.556275712" name="GCC C Compiler" superClass="cdt.managedbuild.tool.gnu.c.compiler.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.c.linker.base.760843449" name="GCC C Linker" superClass="cdt.managedbuild.tool.gnu.c.linker.base">
-                                								
-                                <inputType id="cdt.managedbuild.tool.gnu.c.linker.input.2075935900" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
-                                    									
-                                    <additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
-                                    									
-                                    <additionalInput kind="additionalinput" paths="$(LIBS)"/>
-                                    								
-                                </inputType>
-                                							
-                            </tool>
+                            <tool id="cdt.managedbuild.tool.gnu.c.linker.base.1915283537" name="GCC C Linker" superClass="cdt.managedbuild.tool.gnu.c.linker.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.cpp.linker.base.258679126" name="GCC C++ Linker" superClass="cdt.managedbuild.tool.gnu.cpp.linker.base"/>
+                            <tool id="cdt.managedbuild.tool.gnu.cpp.linker.base.1146536158" name="GCC C++ Linker" superClass="cdt.managedbuild.tool.gnu.cpp.linker.base"/>
                             							
-                            <tool id="cdt.managedbuild.tool.gnu.assembler.base.1339908932" name="GCC Assembler" superClass="cdt.managedbuild.tool.gnu.assembler.base">
-                                								
-                                <inputType id="cdt.managedbuild.tool.gnu.assembler.input.1268379485" superClass="cdt.managedbuild.tool.gnu.assembler.input"/>
-                                							
-                            </tool>
+                            <tool id="cdt.managedbuild.tool.gnu.assembler.base.31723148" name="GCC Assembler" superClass="cdt.managedbuild.tool.gnu.assembler.base"/>
                             						
                         </toolChain>
                         					
@@ -86,25 +68,21 @@
     <storageModule moduleId="scannerConfiguration">
         		
         <autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+        		
+        <scannerConfigBuildInfo instanceId="0.1463978012">
+            			
+            <autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+            		
+        </scannerConfigBuildInfo>
         	
     </storageModule>
     	
     <storageModule moduleId="cdtBuildSystem" version="4.0.0">
         		
-        <project id="swad-core.null.1175972262" name="swad-core"/>
+        <project id="swad-core.null.19211215" name="swad-core"/>
         	
     </storageModule>
     	
     <storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
-    	
-    <storageModule moduleId="refreshScope" versionNumber="2">
-        		
-        <configuration configurationName="Default">
-            			
-            <resource resourceType="PROJECT" workspacePath="/swad-core"/>
-            		
-        </configuration>
-        	
-    </storageModule>
     
 </cproject>
diff --git a/.project b/.project
index e02ad1cb..1900712a 100644
--- a/.project
+++ b/.project
@@ -22,5 +22,6 @@
 		<nature>org.eclipse.cdt.core.cnature</nature>
 		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
 		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
 	</natures>
 </projectDescription>
diff --git a/.settings/language.settings.xml b/.settings/language.settings.xml
index e976af97..24cd2815 100644
--- a/.settings/language.settings.xml
+++ b/.settings/language.settings.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <project>
     	
-    <configuration id="cdt.managedbuild.toolchain.gnu.base.355361470" name="Default">
+    <configuration id="cdt.managedbuild.toolchain.gnu.base.1826109495" name="Default">
         		
         <extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
             			
@@ -9,7 +9,7 @@
             			
             <provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
             			
-            <provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuildCommandParser" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser" keep-relative-paths="false" name="CDT GCC Build Output Parser" parameter="(g?cc)|([gc]\+\+)|(clang)" prefer-non-shared="true"/>
+            <provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
             			
             <provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-524615886456566662" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
                 				
diff --git a/sha2/sha2.o b/sha2/sha2.o
index de779df9..116172b2 100644
Binary files a/sha2/sha2.o and b/sha2/sha2.o differ
diff --git a/soap/swad_web_service.h b/soap/swad_web_service.h
index f21e3e89..08fe62d1 100644
--- a/soap/swad_web_service.h
+++ b/soap/swad_web_service.h
@@ -1,7 +1,7 @@
 // File: swad_web_service.h
 //gsoap swad service name: swad
 //gsoap swad service namespace: urn:swad
-//gsoap swad service location: https://swad.ugr.es/
+//gsoap swad service location: https://localhost/
 
 /*****************************************************************************/
 /******* Data structures used to return data in web service functions ********/
diff --git a/swad_changelog.h b/swad_changelog.h
index 7dd1a065..191741e2 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -532,7 +532,6 @@ Param
 	Version 19.144.3: Mar 06, 2020	New social network: twitch. (282286 lines)
 					2 changes necessary in database:
 ALTER TABLE usr_webs CHANGE Web Web ENUM('www', '500px', 'delicious', 'deviantart', 'diaspora', 'edmodo', 'facebook', 'flickr', 'foursquare', 'github', 'gnusocial', 'googleplus', 'googlescholar', 'identica', 'instagram', 'linkedin', 'orcid', 'paperli', 'pinterest', 'researchgate', 'researcherid', 'scoopit', 'slideshare', 'stackoverflow', 'storify', 'tumblr', 'twitch', 'twitter', 'wikipedia', 'youtube') NOT NULL;
-
 					Copy the following icon to icon public directory:
 sudo cp icon/twitch-brands.svg /var/www/html/swad/icon/