* remove ZeroClipboard, pain to test locally and deployment didn't work
right due to needing absolute path to the swf always
* remove the clipboard alteration on the fly, behaves oddly and can be
confusing
* add an explicit button to expand and collapse the setup content
* fixup some styling
as recommended by nwi
use same style as logo but very slightly smaller font, otherwise the
difference is a bit jarring as numbers are much bigger than the app logo's
text
* canonical_root setting is the path to the root of the canonical sphinx doc,
if not set no canonical link is generated, must end with "/"
* canonical_branch defines the canonical branch to which to redirect, defaults
to master
also various side-fixes:
* disabled permalinks in sphinx instead of hiding them via CSS
* improved generation of github links, removed _app global and setting of
linkcode_resolve in conf.py