WebMovieDB new developer release 2.1.3

New in this release of your favorite multi-user online movie management:
- New session system (independant of php sessions)
- Improved modularization for classes user, usermanager, movie, movieversion
- IMDB query can be disabled
- A lot of workflow bugs fixed
- Worklist and Mass Update now are really usable
- Fixes for password / group edit
- New private field only shown to owner
- Unit Tests for better development
- New distribution script