minor setting changes, fix save updates

- fix where the 'update saves' button was never visible to update the
related saves when changing graphics. this may be the cause of some of
the weird bug reports.
- changed the title on the background image
- added a button for jodgap's database on the main toolbar
- fixed the furniture button's tooltip
- reverted 'botany' to 'herbalism' as per Meph's request
Merge pull request #84 from splintermind/master

minor setting changes, fix save updates
reverted allowing saves to be updated

- updating saved games is pretty broken, best not to even allow it for
now