Fix version check for nightly builds (refs #387)
Skip tags on trac-sync (fixes #401)

A tag will have no parent commit, so syncing a range from the
'parent commit' (all zeroes; start of repository) to the current
HEAD will effectively re-sync every commit.

This change will skip all trac-sync for tags, since they do not need
any syncing and it will only cause more comments in each tagged ticket
and a deluge of notification e-mails.
Show disabled components as disabled, not as warn (fixes #398)
Renamed parameter to kwargs to prevent confusion with args.
Updated version

 * Version is now one higher for nightly builds
 * change VERSION to __version__ (as per PEP 369)
 * removed some svn-specific crud in setup.py
Updated CHANGES document
Update the imports with the new attribute
Inform user which SSH keys are accepted (refs #385)

Big changes to add this:
 * Added lightbox code/css,
 * Added information about OpenSSH style and PEM style keys.