Revert "Added gui for IMDB watchlists in Config General."

The main core of this code was lifted from Trakt code and not developed enough to be suitable for purpose given that the Trakt code isn't fully developed either. An issue found leading to this decision was that show statuses were set false instead of the expected default, however, worse was that users had no way of choosing shows to add, was not informed of what was actually going on once a URL was added to the UI, and was not offered options prior to adding shows like the normal add new show work-flow does. Basically, there are too many issues and this feature is too immature for inclusion.
Improve display of progress bars.

Change fill color height of progress bars in the Downloads columns of the show list page.
Change fill color height of progress bars under the images in Layout Poster of the show list page.
Remove top grey border on the up to 20% red progress bars in Layout Poster of the show list page.
Merge remote-tracking branch 'upstream/develop' into develop
Overhaul General Configuration. Tweak top navbar. Fix imdb and other images.

Change to rename General Configuration -> "Web Interface" tab as "Interface".
Add a "User Interface" section to the "Interface" tab.
Change consolidate "Date and Time" and "Theme" tab content to "User Interface" section.
Add field in Advanced setting for a custom remote name used to populate branch versions.
Change theme name "original" to "light".
Improve text wording on all UI options under General Configuration.
Improve reduce over use of capitals.
Improve streamline UI layout, mark-up and some CSS styling of all General Configuration tabs.
Fix default top navbar background white-out behaviour on browsers that don't support gradients.
Improve top navbar gradient use for greater cross browser compatibility (e.g. Safari).
Fix dark theme divider between Season numbers on display show page.
Fix main background and border colour of logs on log page.
Fix imdb and three other images rejected by IExplorer because they were corrupt. Turns out that they were .ico files renamed to either .gif or .png instead of being properly converted.
Fix "Subtitle Language" drop down font colour when entering text on the Subtitles Search settings.
Clean up text, correct quotations, use spaces for code lines, tabs for html.
Update changelog.
Tweak description under "Git remote for branch" on "General Config"/"Advanced Settings".
Merge pull request #42 from SickragePVR/feature/GenConfigLogAndNav

Overhaul General Configuration. Tweak top navbar. Fix imdb and other ima...
Implement automatic saving of poster layout sorting options on show list
Merge pull request #40 from adam111316/feature/save_poster_layout

Implement automatic saving of poster layout sorting options on show list
Clarify description for backlog searches option on provider settings page
Merge remote-tracking branch 'upstream/develop' into develop
Fix sorting options on Show List page.

Fix Layout "Poster" sort of Paused, Ended, and Continuing shows as they were random.
Fix Layout "Simple" sort of tvrage "New" and "Returning" series by changing status column text to "Continuing".
Merge pull request #43 from SickragePVR/feature/FixShowListSort

Fix sorting options on Show List page.
Add an in progress spinner that is suitable for the dark theme.

Add dark spinner to "Add New Show" (searching indexers), "Add existing shows" (Loading Folders), Coming Eps and all config pages (when saving).
Merge pull request #44 from SickragePVR/feature/AddDarkSpinner

Add an in progress spinner that is suitable for the dark theme.
Fix theme identification for spinner when restarting.
Merge pull request #45 from JackDandy/feature/FixRestartRef

Fix theme identification for spinner when restarting.
Fixes errors occurring when a show folder is deleted outside of SickRage
Merge remote-tracking branch 'upstream/develop' into develop
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.