First rough version of JSON-RPC implementation

This is far from finished. Do not use this branch until it is merged with master.
New option to not delete videos that are in progress

Checks if the videos have a resume point, which means you have stopped watching halfway. This includes videos you have already watched before.
Support for deleting TV show episodes via JSON-RPC

Also, the requests are more dynamic and are generated based on the "option" argument provided
Updated the changelog
Support for cleaning movies
Added filter for videos without ratings
Code shifting and creating subfolders for non-tvshows
Code cleanup
Use XBMC's built in illegal character substitution
More debugging during disk space checks
Merge branch 'json-rpc'. Closes #7