Resized achievement images
Smaller enemy images
Reduced the size of the rainbow image
Smaller pot sprite
Resized bg-title
Reduced the resolution of the lasers
Reverted bg-title.png to the old variant again, because of troubly positioning
Merge pull request #148 from ninjadev/reduce-image-resolution

Reduced image resolution (1,6 mb less data)
Merge branch 'refs/heads/post_release_fixes' into reformat-js

Conflicts:
	src/MenuState.js
	src/Rainbow.js