Blacklisting improvements

New: New releases that fail will be retried a second time after waiting 1hr (configurable)
Fixed: Blacklisting releases with the same date and vastly different ages
Missing episode search will skip already queued releases
Merge branch 'blacklisting' into develop
Health check results are stored in memory and updated as required
Update series logging improvements
Rescan all series via RescanSeriesCommand
Fixed: Removed validation to ensure series path exists when updating a series
Added test to confirm Release Group: Cyphanix parses properly
Missing search now searches for episodes not in queue
New: Optional disable RSS Sync (set interval to zero)
Fixed: Daily series won't get treated as specials during sample checks
Fixed: Moved main database cleanup to daily housekeeping to prevent windows service startup failure.
Merge pull request #71 from Taloth/vacuum

Fixed: Moved main database cleanup to daily housekeeping process
New: Get series images via the API (3rd party app support)
New: Automatic search for missing episodes if RSS Sync hasn't been run recently
Fixed broken test
Fixed: Next airing will only include monitored episodes
Fixed: ctrl, alt and cmd won't trigger searching on add series
New: Alternative titles on Series Details UI
Fixed: Plex server authentication