DiD: updated Parthyn maps with embellishments, grass, and a few general tweaks
DiD: made use of facings in all scenarios
Merge branch 'master' of github.com:wesnoth/wesnoth
DiD S10: used the hang out MAI to keep Volk at his keep instead of an ugly movement cost hack
DiD S10: face Malin to Volk once he goes to his keep, and removed delay before spawning advisor
DiD S10: 'book out of the battleground' -> 'book off the battlefield'
DiD: filter directly on role for removing book carrier overlay

Also remove overlay immediately when carrier reaches Malin's castle