E1S3: fixed tag typo in simplify_location_filter
E1S3: add the side 2 MAI one turn later
E1S3: set schedule so dusk start on turn 5 (same turn as the undead will appear)
E1S3: made undead appear on southern castle
E1S3: tweaked some dialog. Decided to make Delenethor Rhanchor's (from E1S2) brother
Fixed Northguard die sounds
Added basic attack animations for Northguard
E1S3: made Delenethor a Spectre. Too easy to kill him as a Wraith