added is_loading_episodes property to show objects to return True or False when show episode data is being populated
legacy API v1 show.seasons and show.seasonlist wait for episode data to finish loading by using show object is_loading_episodes property

fixed episode.setstatus legacy API v1 endpoint
fixed show.addnew legacy API v1 endpoint
fixed issues with Ombi and our legacy API v1 not working together properly

set series_provider_id param for legacy API v1 to optional with a default value of series_provider_default from config

Refactored get_show_list function to allow for offset and limit props

Added import exception handling for collections Iterable import for backwards-compatibility
Replaced AttrDict with CleverDict
Fixed `NoneType` issue with rating/votes for imdb popular shows
Fixed issue with bad comparison of NoneTypes for config.ini migration code
Fixed issue with NMA priority being string value when db column is int