MODE-2293 Removed MapDB as a separate module and changed it to be a local resource of the modeshape.main module.
MODE-2293 Added a missing journaling integration test for WF and also a delay for the LocalIndexProvider tests without which tests were failing locally for me (most likely due to the async nature of the index processing)
MODE-2245 The web-explorer webapp did not contain a correct web.xml for the WF kit. Also added a smoke test to make sure the webapp is correctly deployed in WF.
Merge pull request #1235 from hchiorean/MODE-2293

MODE-2293 Removed MapDB as a standalone module and converted it to a local resource
MODE-2285 Corrected how the index providers are written out prior to shutting down
MODE-2285 More correctios to the index provider behavior in the Wildfly subsystem.

After these changes, any index provider or index definitions in the subsystem XML remain there and unmodified even after shutdown.
The problem was the 'relative-to' and 'path' index provider properties were not in the list of model attributes, and thus ignored
(in some scenarios only).

Also fixed a potential NPE in the IndexProvider base class.