A mojor update to the web GUI, unfortunately all done in one go. Nevertheless, here...

A mojor update to the web GUI, unfortunately all done in one go. Nevertheless, here it is, and has many improvements to the christmas edition commited in december:

- the GUI now uses a sqlite3 database for storage, so all configuratons are stored
- aggregated statistics for groups
- graphs on demand for raw data
- CSV export of stat data
- 'Restricted mode' to get a web GUI which prevent you from doing changes
- logging of changes performed in the GUI
- generall minor improvements in the GUI

Additional perl module dependencies are Algorithm::Diff and DBD::Sqlite3

A proper documentation will appear on the wiki in a couple of days to describe all that can be done with the web GUI.

git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@3786 d4fa192b-c00b-0410-8231-f00ffab90ce4