Add 'authoremail' in commit object.
Make several improvements.

The following improvements were made:
- fixed html, using <span> instead of <div>
- email from now commit author email address
- added reponame in email subject
- added link to gitweb where to find the commit (to be put in config)
- changed timezone to Europe (to be taken from machine)
remove tabs. Also previous commit was authored by Fons Rademakers.