[fix bug 1015759] Curated groups - keep active filtering after confirmation of membership request and after removing a member (unit tests included)
[fix bug 1045052] List vouchees in alphabetical order.
Merge pull request #1056 from glogiotatidis/1045052

[fix bug 1045052] List vouchees in alphabetical order.
[fix bug 1045742] Add can_vouch /admin action.
Update production locale management documentation.
Merge pull request #1057 from glogiotatidis/can_vouch_fix

[fix bug 1045742] Add can_vouch /admin action.
Merge pull request #1004 from rmaceissoft/fix/Bug-1015759-2

[fix bug 1015759] Curated groups - keep active filtering after confirmation of membership request
[fix bug 1042552] Display membership filter only when the group is accepting new members by request