Reverted toggles for provider priorities, subtitle plugins, and post-processor metadata choices

Misc provider URL updates.
Misc fixes for tests.

Disabled closing of logger on shutdown/restart

Fixed table sorting issues for mass update and main shows views

Fixed issues with episode searches and episode search retries
Fixed issue with data retrieval from database files

Fixed issue with show posters being misaligned

Added backdrop for history view
Added opacity style to views with backdrops