login: ensure login form only appears if not logged in.
Merge branch 'master' of labs.riseup.net:crabgrass-core
added some basic group destruction. more to come.
Not pretty, but puts text in infobox saying a committee is a child of its parent group (https://labs.riseup.net/code/issues/3834)
add additional link to leave a group
wikis: fully scoped partial path seems to fix problem.
group membership: fixed view syntax error.
When displaying groups to associate a new committee with, checkpermissions.
hide the me menu, please!
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