#317: Productize updater
- version uses same pattern as other nexleaf apps
 - current version is 1.19
- fixed message typos
- enabled updateFrequency/preferences in the UI
- refactored Preferences so that they are sane and work
- introduced MVC paradigm and traditional Android facilities via SettingsModel, AppManager
- added experimental code for install without UI
- added experimental code to support proxy for tracing of HTTP calls
- adjusted build procedure to be compliant with temptrace dosign.sh script.

To build:
ant release
../TempTrace/dosign.sh -p updater -v 119 

Known problems:
 We get 'Server response was invalid' on every other package update request
#317: Productize updater
- added status model and activity
#317: Productize updater
- added more info to status
- Update to version 121
#317: Productize updater
- Simplified UI/tab - work in progress

- added color coding of managed apps
- added info to the manage tab:
 - last install date
 - current version
 - available version 
- cleaned up: class names etc.