adding ui for usergroups and permissions
single usergroup page working

There was a conflict between what was the top level html and what was a
template for usergroups since ce_usergroups.html used usergroup.html as
a template but then usergroup.html was supposed to work as the top level
html when a usergroup was navigated to directly (e.g. /ac/1.2)
polishing usergroup and permissions ui
more
single usergroup page working

There was a conflict between what was the top level html and what was a
template for usergroups since ce_usergroups.html used usergroup.html as
a template but then usergroup.html was supposed to work as the top level
html when a usergroup was navigated to directly (e.g. /ac/1.2)
polishing usergroup and permissions ui
bit of cleanup after merge
more cleanup