Edited PluginLoader

Belongs to #15
Implemented more functionality for TMDB plugin

Belongs to #15
Added docstrings, code formatting
Changed path to log files
Changed name and path of configuration folder
Changed root namespace
Changed path of temp folder
Made temporary folders invisible
Added test for RegEx - pushed coverage to 100%
Fixed log path in Decorator
Added PluginBase
Added language parameter to methods
Implemented missing functionality to TMDB plugin

Belongs to #15
Added docstrings to PluginBase
Added missing language parameters
Code cleanup
Implemented wrapper for MovieScanner plugins

Belongs to #15