Send notifications to all enabled notifiers upon SickRage update.
Add global option to disable SickRage update notifications via notifiers.
Merge pull request #624 from rawsonm88/feature/update_notifications

Notify users on SickRage update via notifiers
Lowered CPU usage even further, re-wrote daemonizer code for startups, removed misc unrequired functions from providers.
SickRage now uses a internal name cache comprised of (showlist, scene exceptions, scene names) used to search and create show objects from which is needed for parsing search results.

Scene exceptions now uses a internal cache for scene exceptions and scene season exceptions, helps reduce overhead to DB and performs faster lookups when making scene exception requests.
Merge remote-tracking branch 'origin/dev'