Added is_loading and is_removing properties to TV show object

Refactored search, show, and post-processor task action enums

Fixed dict changed size error for queue tasks

Fixed issues with manual searches and search status updates
Misc function renames

Refactored queue system to use built-in queue classes instead of Tornado's queue classes

Refactored search clients into classes for NZB and Torrents
Refactored web session core class to add 1s sleep during connection errors for retries
Refactored using IOLoop.current() to get main ioloop, reverted back to using core variable that calls IOLoop.current() once
Refactored add show options to include sports, dvdorder, subtitle metadata, and air-by-date options

Fixed There is no current event loop in thread 'POSTPROCESSORQUEUE-MANUAL' error, using AnyThreadEventLoopPolicy
Added thread locking to queue workers

Refactored usage of IOLoop by removing const io_loop from core and using IOLoop.current() calls instead

Refactored how logs view uses max lines
Refactored queue class to fire events using threads instead of ioloop
Refactored how scheduler jobs are forced to execute on request

Fixed misc queue priority issues

fixed issues with mediaToSiCKRAGE code

Fixed issue #108 - Post-Processing issues due to unicode directory and file names