Making frequency of version update checker (CHECKVERSION) configurable

Adds an option in Config > General > Misc called "Update Frequency"

Closes #54
Typo in PROXY_SETTING variable

Closes #91
Changing release name from alpha to TVRage
Complete re-code of season/episode search code.
Switched from using standard requests to using sessions.
Fixed bug in speedcd that was preventing config from saving.
Fix for shows that are air-by-date
Merge pull request #109 from WebSpider/change_toptitle

Changing release name from alpha to TVRage
Code cleanup
Merge pull request #98 from WebSpider/fix_proxy_setting

Typo in PROXY_SETTING variable
Making frequency of version update checker (CHECKVERSION) configurable

Conflicts:
	sickbeard/__init__.py
Fix for backlog searches
Merge branch 'pulls/95'
Disabled sceneConvert renamer for now till we add it in optionally.
Fixes issue with update frequency.
Fixes backlog search issues with newznab providers.
Fix for update frequency ... again!
Added in min_update_frequency
Fix for new shows
Centering the header, by popular demand
Fix for sql mass add issues.
Fix for KAT and TPB providers.
Fix for Newznab providers.
Fix for air-by-date and sports shows
Fixes interval setting for auto updates and check version, will set the interval in realtime and take effect right away.