Game : moved 'highlight_obj' to be a player field (not a global).
Utils : added to_vector()
Client : draw a health bar and armor/mana bar in the Stats panel.
Client / stats : fixed health/armor bars to show actual values.
Data : created a place-holder "ui/freelook" image, shown when in free-look mode.
Data : default bindings for TAB and RMB are now "togglecamera" command.
Client : the free-camera mode is now a toggle, implemented via "togglecamera"
command which can be bound to keys or mouse button.  Binding this to the RMB
actually works (unlike the +button8 method).