Cleanup
* Cleanup holdings helper and module config
Merge remote-tracking branch 'origin/development' into development
Cleanup Bootstrapping
* Renamed bootstrapper class (removed prefix)
* Added check to prevent double modules (pull request in core: https://github.com/dmj/vf2/pull/4)
Merge remote-tracking branch 'origin/development' into development
ItemId link for holdings
* Build link based on item properties
* Cleanup of holding helper, removed dependency to driver