plugins/TmdbMovieImportPlugin: Implemented APIv3.
Use JEditorPane instead of JLabel to allow long plugin descriptions to include clickable hyperlinks
TMDB movie import plugin improvements (closes #69)
 - Remove dependencies for unused libraries
 - Removed trailer URL and certification import properties
 - Updated long descriptions to include link to tmdn and the used API (en, de, fr)
 - Updated plugin version
Unify displayed descriptions for plugins
 - No dot at the end of short description
 - Added link to service provider for IMDB import plugin
Fixed wrong path in install.xml
 - Replaced \ by / in path to repair build on unix systems