Osmorc Code

* added facet setting allowing to set up, where the manifest file is located (this needs to be honoured by the manifest watching part, as of now only the compiler is using it)
* the bundle compiler merges the user's specified manifest file into the manifest of the created bundle
* added facet setting for giving osmorc total control on the manifest (so the user does not need to specify a manifest at all, it will just be put into the bundle file, this part is not yet implemented though)
* facet settings are now properly persisted
* facet dialog is now watched for changes