[FIXED] show all strokes and undo *

draw few strokes say 5
undo 3 times
show all strokes

may be a problem with bboxes

Resolution **

recalc view strokes bbox on stroke undo factor out common bbox calculation code piece

[FIXED] fit image and cancel leads to GL error and gray box *

fit image
cancel
strange box remains
GL errors in terminal

Resolution **

active flag for textures. better texture management. do not send IMAGEFIT with deleted tex