init canvas to screensize
fixed tests
fixed another handfull of tests
test fixes again
fix rectangle fill tool
Merge branch 'master' into 8.94_canvas_size_to_screen_size
fixed string problem, decrease zoom level on startup
Merge branch 'master' into 8.94_canvas_size_to_screen_size
add test
fixed test
fixed test
Merge pull request #100 from Catrobat/8.94_canvas_size_to_screen_size

8.94 canvas size to screen size
implementation: [SG] @galstc05
acceptance: [MS] schmidiM