Ignore more files
Improve splash screen
Add an Activity to show info after Scanner Action
Tweak the splash screen
Use custom preferences in Eclipse
Improve layout of HubActivity
Add an ScannerAction object mechanism

Whenever an action is initiated, the polymorphic object will be created
and passed to ScannerActionActivity, which executes it and shows any
possible messages.
Tweak ScannerActionActivity design
Add lint.xml
Add a QR scan action
Pass the Action to ScannerActionActivity
Style & whitespace improvements