Add fields necessary for creating PPSM expert profiles.
Allow user activation for admins.
Add view that lists PPSM experts.
Add expert profile page.
Add name & title fields to user forms and frontend views.
Merge branch 'user-profiles' into develop
Bugfix: Drop unneccessary unique constraints in User table.
Bugfix: prefix CV urls with 'http://'.
Revert "Bugfix: prefix CV urls with 'http://'."

This reverts commit 602947ee5bab71e5b38a5548b2e77fe945147859.
Revert "Bugfix: Drop unneccessary unique constraints in User table."

This reverts commit 7197e97773029c158be2c21a2c68f1c069b08190.
Revert "Merge branch 'user-profiles' into develop"

This reverts commit 7b305c7f76b418bda198c7c88893739f76427885, reversing
changes made to 6bf1c6a55dfd20efb65109008ff4f7f3806ce57c.
Merge branch 'master' into develop
Merge branch 'develop'