[Fix Bug 719925] Joining/Leaving group doesn't update the groups page
Merge pull request #416 from Sancus/719925

[Fix Bug 719925] Joining/Leaving group doesn't update the groups page
[fix bug 846678] Allow sorting of groups by number of members.
[fix bug 846488] [AP] Different Add and Change forms for Groups, Languages, Skills
[bug 816309] Set GA_ACCOUNT_CODE in local.py-devdist.
Merge pull request #417 from glogiotatidis/group-admin-bug

Group admin bug