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
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'