A few map view tweaks & improvements.
Started on tooltip signs.  Not done yet.
use BlockFaceUtil
Can now easily install custom fonts for map views.
Just put Truetype or Type1 fonts in plugins/scrollingmenusign/fonts
Some visual map view tuning
Scrolling sign views with mouse wheel now no longer changes held item
Needs the new PlayerInventory setHeldItemSlot() method in Bukkit 1.5.1
Tooltip signs for global scrollable views work now.
Fixed bug with scroll pos after going into a submenu
Fixed bug with multiline map view tooltips