Picture widget simplification and extra_context fix

src/includes/components/widgets.pug

@@ -190,15 +190,15 @@ sib-widget(name='cs-section_introduction')
 sib-widget(name='cs-account-picture')
   template
     figure.avatar
-        img(name="${name}", src="\${value || '/images/alien.jpg'}", alt="Profile picture")
+        img(src="\${value || '/images/alien.jpg'}", alt="Profile picture")
 
 sib-widget(name='cs-profile-picture')
   template
-      img(name="${name}", src="\${value || '/images/alien.jpg'}", alt="Profile picture")
+      img(src="\${value || '/images/alien.jpg'}", alt="Profile picture")
 
 sib-widget(name='cs-preview-picture')
   template
-      img(name="${name}", src="\${value || '/images/alien.jpg'}", alt="Preview of the resource")
+      img(src="\${value || '/images/alien.jpg'}", alt="Preview of the resource")
 
 sib-widget(name="hidden-widget")
     template

src/includes/head.pug

@@ -25,6 +25,7 @@ head
             {
                 "entrepreneurProfile": "http://happy-dev.fr/owl/#entrepreneur_profile",
                 "mentorProfile": "http://happy-dev.fr/owl/#mentor_profile",
-                "account": "http://happy-dev.fr/owl/#account"
+                "account": "http://happy-dev.fr/owl/#account",
+                "picture":"foaf:depiction"
             }