Bugfix: PHP 5.3 compatibility
Bugfix: Removed debugging code and minor refactoring
Refactor: Ignore cache
Upgrade to SSP 1.12-dev
Revert "Upgrade to SSP 1.12-dev"

This reverts commit e2807aa82032a9953b2a188566521945afc8ac7f.
#407 Corrected comment
#407 Fixed upgrading from janus 1.13
#407 Removed accidentally added file
Merge pull request #408 from janus-ssp/hotfix/407-fix-db-upgrade-from-1.13

Hotfix/407 fix db upgrade from 1.13
Merge remote-tracking branch 'origin/develop' into hotfix/405-fix-install-page
#405 WIP almost working migrations from install