Revert "Modified GAPP bar"

Reverts gnowledge/gstudio#914
Getting following error while login or selecting  "CREATE PAGE"  or "UPLOAD FILE"  drop-down.

NoReverseMatch: Reverse for 'task_create_edit' with arguments '('',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['(?P<group_name>[^/]+)/task/create$']