Do not log ERROR when show isn't in list. Log WARNING instead.

Prevents the error log in webinterface from filling up, if there are downloads in your watch folder, which aren't in SB list
* Added saving of changed newznab categories in backend.
Added gui for selecting categories from multiselect box.
Created some helper function in js, for dynamically modifying selects/options

Made results of function for retrieving newznab capabilities more generic. In that now always a valid json is returned with success,tv_categories,error

Added gui elements for retrieving and displaying newznab capabilities

Added backend functions for calling ajax /getNewznabCategories?name=yourNewznabProvider&url=https://newznabprovURL&key=YourApiKey
Returns json.dumps() with TV category capabilities of newznab provider. Is going to be used for new gui element in adding newsnab provider.
Fixed some git conflicts
Added the torrent provider for www.t411.me tracker
Merge pull request #762 from dhellwich/patch-2

Do not log ERROR when show isn't in list. Log WARNING instead.
Merge pull request #769 from KontiSR/dev

Added gui for for choosing newznab (tv) categories
Merge pull request #780 from djoole/t411

Added the torrent provider for www.t411.me tracker
Fixed saving general settings rootDir error
Fixed TypeError: list indices must be integers, not list that occured during searches
Fixed high CPU usage during searches, adding conditional check to prevent un-needed name parsing of search results when search result was previously already parsed and checked during filtering of bad releases
Added exception catching for timeouts to notifiers
Fixed failed download handling.
Improved search queue code.
Fixed DailySearchQueueItem show attribute error during searches
Fixed BacklogSearchQueueItem show attribute error during searches
Fixed global name season error during searches
Improved newznab offset code
Improved newznab offset code
Fixed newznab to search no more then 1000 results
Fixed search issues regarding error about result attribute being referenced early
Fixed issues with cache results being used during searches