PEP8 fixes, add missing unicode notation for logging messages.
Add UI notification when forcing backlog for a show.
Fix ESM showing 'unknown' items.
Merge pull request #892 from thezoggy/dev--minor_fixes_tweaks

minor fixes tweaks
Reverting previous limitation as we now fetch more results than the limit, https://github.com/midgetspy/Sick-Beard/commit/7919f05d5b1b5d9a889cf85cd482ac1984c55991
If there are more than 100 results for a query, fetch up to an additional 300 results (4 hits total). Mainly for when we search without tvrage id set.
Handle when newznab servers take their API offline more gracefully.
Add logic to fall back to query by string if tvrage search returns 0 results.