Add color strings

Fix build error by adding strings for color
Some fancy display changes (position and unit)

+ No space before unit
+ Hide B in unit
* Show speed in exact position in two-line mode
- Color preference removed temporarily (no library/code yet)
Fancy display changes (completed)

+ Always show suffix (when zero speed is hidden)
* Enable/disable checkboxes as per relevance
* Some minor optimizations
Sync upstream

Update to version 0.9 and merge, keeping new changes.
+ Re-enable color choosing option (library added now).
Re-organize settings

+ Add new categories Unit Settings and Indicator Appearance
* Reorganize settings into proper categories
* Move category names to strings.xml
Merge upstream

Test merge upstream resolved conflicts
Merge master

Test merge master
Merge pull request #10 from ADTC/master

Fancy display options and better appearance; settings categorization