Added validation and tests for apps module
Progress on making users app admins
WIP on app admins and app tests
Merge branch 'master' into appTests
Added tests for creating, getting and updating tenants
Merge branch 'master' into appTests
Added tests for app administrator functionality
Switch back to latest cookie-session
Started adding validation to global administrators
Followed up on app test review
Improved error logging when an app administrator can not be updated
Merge pull request #13 from fronteerio/appTests

App module tests and validation