Stripped down to original app. No more My Devices, No Content provider.
Updated .gitignore
Gradle should not be in git
Use latest gradle
Always use the latest support library
Sign the packages
Use the latest build tools
Convert Carrier class to an Enum
Use the support library for Fragments
Simpler FastDateTimeZoneProvider init
Split DatePickerFragment layout into separate layouts
Fixed exception when embedding DatePickerFragment in a layout
Fix position of xmlns in CalculatorFragment layout
Switch MainActivity to a FrameLayout, embed the calculator fragment into the layout
Let fragments do there job restoring the DatePickerFragments state
Remove unused files