coal: more tweaks
- add revision numbers to changeset, browse, and file pages
- add revision number to revision number navigator in log
- remove node from log and filelog pages
- add changeset, browse, and archive buttons back to log page
- make buttons more clickable with display: block
- fix alignment of some table heads
% should fail
abort: path contains illegal component: .hg/00changelog.i
adding a/a
% should fail
abort: path 'b/b' traverses symbolic link 'b'
% should succeed
% should still fail - maybe
abort: path 'b/b' traverses symbolic link 'b'