Merge branch 'master' into DartsBuilder
 - eagle makes sound
 - basic 'streak' functionality
 - tried new tumbleweed sprite, but reverted to old one for now
 - added "Custom" commodity type to HUD, which will display no icon at all - for use in e.g. Texas, where a number needs to be counted without really having an icon
 - made streak counter with the above
 - finished functionality of Darts streaks
 - added target hit effect in Texas
 - removed old Itween fader from ScreenFader (was already not being used, but still spawned one)
 - temporarily disabled possibility to 'fail' a darts level
- sounds for cowboys
 - fully configured 5 levels for Texas
 - made ScoreVisualizer display score texts above GUI
 - added Pause button to Texas
 - replaced Tumbleweed texture
 - added name, image, description, help text to Texas
 - added level descriptions for Texas
 - made it so the bull in Texas can also be hit on the way in
Merge branch 'DartsBuilder'