Merge branch 'development'

Updated **Womble** provider to use 'tv-sd' and 'tv-hd' categories 
instead of the now defunct 'TV-x264'.

Add extension filter to associated files for Post Processing #845
  * One case example is if you only want subs, you could create the 
    filter '.idx, .sub, .srt'. We strip spaces and ignore case when 
    matching against the filter.
  * This is useful for those that do not have the ability to setup a 
    cleanup script in their downloader.

Re-arrange snatched+download SQL to be easier to read and compare (split
snatched and download out).
  * Show **downloaded+snatched** on homepage rather than the combine
number,
    show tooltip that explains it #842
  * Fix sorting shows with more than 100k episodes

Cleaned up season pack vs single episode searching logic
  * Added check to only consider a full season pack if the last episode
in the 
    season airdate is older than 7 days or if the last aired ep is older
than 'today'.
  * Fix **BTN** backlog search for single episode searches, remove
duplicate search parameters.

Fix **OMGWTFNZBS** proper/repack search

Post-Processing fixes
  * Fix release name not set on air-by-date shows during post-processing
  * Fix processing season 0

Change clean proper name to check against history
Should prevent a proper from being re-downloaded 
(such as the reposted '-RP' releases)

Change setting status to **UNAIRED** for future episodes (GC-2397)

Revised Roman Numerals conversion routine to be stricter
(ex: IIII is not 4, IL is not 1) and raise error instead of defaulting
to 0.

Regex tweaks. Pull #841
  * Add '480p' to our regex to reduce the chance of it being matched 
    as the season/ep or multi-ep reference.
  * Filter out releases like
'Louie.S02E11.PROOFFiX.720p.BluRay.x264-DEiMOS' 
    and 'Rome.S02.DiRFiXES.720p.BluRay.x264-SiNNERS' as they are useless
for our purposes.

Season 0 fix. Pull #843
  * Exclude specials from being changed to wanted automatically because
of the daily search.
  * When excluding specials use '> 0' rather than '!= 0' just to be more
efficient.
Merge branch 'development'

* development:

Change initial default:
naming pattern (from none to the first option),
search provider (from womble to sbi)

Fix saving rootDirs (refresh list before save)

Added notifier Pushalot. Pull #848

Minor notifiers tweaks and pep8 fixes. Pull #849
Add Womble back as initial (default) search provider
Merge branch 'add_womble_back_as_initial_search_provider'

* add_womble_back_as_initial_search_provider:
  Add Womble back as initial (default) search provider
Remove the now defunct boxcar notifier.
Added support for the new append method from NZBGet 13+

Based on PR-851 by Prinz23
Merge branch 'PR-852_remove_boxcar_notifier' into development

* PR-852_remove_boxcar_notifier:  closes gh-852
  Remove the now defunct boxcar notifier.
Merge branch 'PR-851_add_nzbget13_support' into development

* PR-851_add_nzbget13_support:
  Added support for the new append method from NZBGet 13+