Cleanup: Remove unused image
Cleanup: Move SVG images to img/svg/ directory
Recover the comment explaining the comment modification

It was dropped in 9bc9fd0d, and it is easier to understand the code
with the comment.
Rearrange and cleanup code to ease refactoring to common function
Cleanup: Refactor into common function
Merge pull request #81 from unho/some-cleanups

Some more cleanups