Fixes errors occurring when a show folder is deleted outside of SickRage
Feature/config_provider_improvements

* Styled config_providers to match new config_general styling
* Removed qtip from providers and converted back to a tab
* Removed superfish-1.4.8.js and supersubs-0.2b.js as they no longer
break provider sorting with qtip removed and is no longer required due
to new UI
Overhaul Config Search Settings in line with General Configuration.

Improve text wording on many UI elements under Search Settings.
Improve reduce over use of capitals.
Change prevent specific rTorrent guidance from showing everywhere.
Fix duplicate html IDs used on the Torrent Search tab, there can be only ONE ID!
Improve streamline UI layout, mark-up, and javascript, remove unused DOM setters.
Clean up text, correct quotations, use spaces for code lines, tabs for html.
config_notifications improvements

* Changed notifier test buttons to not run if required field is missing
* Required fields will now highlight input box and add an icon if field is missing when test is pushed
* Changed Test Plex Media Server to Test Plex Client as it only tests the client and not the server
* Styled config_notifications to match new config_general styling

Wording corrections
Merge pull request #47 from Supremicus/feature/config_notification_improvements

Feature/config notification improvements
Merge branch 'feature/config_provider_improvements' of https://github.com/Supremicus/SickRage into develop
Merge branch 'feature/OverhaulSearchSettings' of https://github.com/JackDandy/SickRage into develop
Merge branch 'feature/FixInvalidShowFolders' of https://github.com/adam111316/SickRage into develop