Removed docstring from plugin since PluginBase is documented
Removed redundancy

Implemented a single method that calls every plugin to get a searched value.
Movie RegEx can now handle absolute paths
Removed language parameters from plugin wrapper - fallback to config
Added defensive check if key exists
Code Cleanup
Implemented get_all in plugin wrapper

get_all() combines the results of all functions from PluginBase.Movie in a dictionary
Added get_title to plugins

get_title() gets the foreign title to a specific country code
Belongs to #15