Battery Stats Widget

- v.1.2.1 - force close bugfix
- v.1.2 - bugfix
- v.1.1 - changing field of the last update on the expected battery life
- v.1.0 - improved performance, added option to change slightly background transparency, Holo theme for configuration screen
- v.0.5 - fixed problem with adding a new widget
- v.0.4 - some changes for better performance, dded possibility to change update interval