admin: Add owner name in project list

Fix apyrgio/synnefo#105
Merge branch 'feature-admin-project-owner' into feature-admin
admin: Add logout option

Redirect to the logout url as specified by astakos.
I believe that the issue apyrgio/synnefo#117 is not resolved yet, as I
am not sure if this is a generic solution.
Merge branch 'feature-admin-logout' into feature-admin