Fix json import and init HDBITS_USERNAME

+ change url variables
+ minor config provider page changes
+ pep8
Merge pull request #737 from itofzo/fix_hdbits_provider_dev

Fix hdbits provider dev
Notify the SB UI whenever an episode is snatched
Remove obsolete providers

Remove nzbx provider
Remove nzbs 'r us provider
Remove newzbin provider
Remove nzbs_org_old provider
Remove nzbmatrix provider and bin_req

+ fix mixed line endings
Remove notifo notifier (PR-709-dbr)
Merge pull request #751 from itofzo/remove_obsolete_dev

Remove obsolete providers and notifier
Remove the fixed background, as it's causing reflows.

Scrolling on large lists of shows or episodes should be much faster now.
Cleanup and trim db migration process

Cleaned up the db version check wording, raise SystemExit exception with message to match how we handle other startup issues.
Added db version min check since we no longer are going to support migrating 2+ year old dbs.
Trimmed down the SB db migration process to only support build 496+ (2012-06-28) -- which covers the major migrations but allows us to eliminate a lot of legacy things that were not done correctly.
Updated initial db schema to latest (based off build 501).
Handle initial db creation compare against the min db check, optimize logic to hit the DB fewer times.
+ PEP8 fixes for db.py
Move database version check into InitialSchema

+ Change some variable names
+ Remove legacy BEST, not in mainDB upgrades anymore
Use CSS instead of janky JS to turn a TD into a clickable space. Resolves browser differences and in the end is much simpler+cleaner.
Merge pull request #757 from timdorr/development

Speed up scrolling
Merge pull request #761 from thezoggy/dev--fix_tableclick

Use CSS instead of JS for table click.
Merge branch 'PR-753' into development
Some PEP8 fixes for the Config sections.
Add doctype to our 401/404 pages. Fix 404 redirect, since the cherrpy setdefault doesn't set correctly for how we use it.
Missing int() around hidden variables
Merge remote-tracking branch 'upstream/development' into offical_dev