[fix bug 997466] Require voucher to have 3 vouches.
Merge pull request #1038 from glogiotatidis/3vouchers

[fix bug 997466] Require voucher to have 3 vouches.
[Fix bug 1038211] Filter admin UserProfiles by users with only legacy vouches.
[fix bug 1033993] Make invite page more aesthetically pleasing.
Merge pull request #1039 from johngian/fix-admin-legacy

[Fix bug 1038211] Filter admin UserProfiles by legacy vouches.