Revert "Merge pull request #36 from krono/krono/draft-enhanchement"

This reverts commit 76b22bb473e0f089fcd78159af74f3226b9be089, reversing
changes made to a3b6a5dffd72b739b98b8c9c0ead5793ab747479.

Reason:
oops, wait... I see some problems:
1) the header on the top of each page always says "Contents" (no matter which chapter it is)
2) the draft git version in the footer disappeared
3) I actually don't see a bitmap.
Sorry, reverting for now...