create xcode project from sources, drop unused images
change target to 10.6
use IB for Preferences window
show saved apikey(token) on prferences window
animage gear icon on connection instead pending paster build
update xcode project settings: autofix some warnings by xcode
simplify appdelegate
datafetcher cleanup
update apikey/token only if input length is 20
use macruby syntax sugar for setObject/objectForKey
fix preferences menu item creation
increase data fetching interval to 1 min.
connect mainmenu preferences to AppDelegate#showPreferences:sender: method
hide projects without builds in last 2 days
set deployment target = 10.6