Added webapi system and first attempt for the core webapi.

Added user profile system to the core module.
Moved /user/{uid} from auth module to core module.
Added possibility to add html before and after a cms form. (useful to add a form before or after, as nested form are forbidden).
Now theme can be installed using roc install command.

themes/admin/assets/js/popup_search.js

@@ -0,0 +1,8 @@
+     $(document).ready(function() {
+       $('#gcse_search_form').submit(function() {
+           window.open('', 'formpopup', 'width=600,height=600,resizeable,scrollbars');
+           this.target = 'formpopup';
+       });
+   });
+
+