Activity: fixes in voter

* the role CREATE is now transformed to CREATE_ACCOMPANYING_COURSE or
CREATE_PERSON when the subject is, respectively, a course or a person;
* the button at the list of activities is now labeled "create"
* the role FULL give access to both role
acTIVITY_CREATE_ACCOMPANYING_COURSE and ACTIVITY_CREATE_PERSON, but not
ACTIVITY_CREATE directly.

src/Bundle/ChillActivityBundle/DependencyInjection/ChillActivityExtension.php

@@ -89,8 +89,12 @@ class ChillActivityExtension extends Extension implements PrependExtensionInterf
               ActivityVoter::CREATE_ACCOMPANYING_COURSE => array(ActivityVoter::SEE_DETAILS),
               ActivityVoter::DELETE => array(ActivityVoter::SEE_DETAILS),
               ActivityVoter::SEE_DETAILS => array(ActivityVoter::SEE),
-              ActivityVoter::FULL => [ActivityVoter::CREATE, ActivityVoter::DELETE,
-                   ActivityVoter::UPDATE],
+              ActivityVoter::FULL => [
+                  ActivityVoter::CREATE_PERSON,
+                  ActivityVoter::CREATE_ACCOMPANYING_COURSE,
+                  ActivityVoter::DELETE,
+                  ActivityVoter::UPDATE
+              ],
            )
         ));
     }