I spy with my little eye 0.95

HUGE rewrite on the photo class
-now properly stores allAnswerSets / allAnswers
-now properly creates blobs based on difficulty
-now properly filters image for any error handling (no colors, not big
enough)
-refactored and cleaned up everything for optimal readability

todo:
-tweak colors/difficulty
-no score/rounds yet
-no menu's yet
-notification on dismissal of inproper photo

Known bugs:
-camera lens stays black when retaking picture for a long time
-replay photo doesn't work properly?
Merge branch 'master' of https://github.com/JulianProfas/kb50