Changed test_mode resource type to bool (from string)
Changed 3 resource value types from string to integer:
* days_until_prompt
* launches_until_prompt
* days_before_reminding
Extracted button background and text to a style
Fix bad reverse test_mode check
Extracted button color hex codes to resource values
Renamed button background drawable since
The colors won't be blue if they're changed in the resources file
Adding Krylez changes.
Fixing typo in preferences name.