[fix bug 938695] Create Curated Group Page (no edit page yet) (+3 squashed)


Squashed commits:
[6034af6] created group_edit template
[1adb946] moved Fieldset styles outside of profile create block to fix group add form
[4bfd8bd] linked create group button to /group_add

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=938695