MoveBetweenAreasCore: update the worldmap if needed

 (which isn't available on all platforms)

hopefully fixes two arm alignment issues

2. sync the guiscripts with the bitfield swap in Button

it is moved to its original place

use IE_CASTING in fx_disable_spellcasting and fx_polymorph (other effects may also disable casting)

This reverts commit 5bd867af.

 fixes spmonsum's sound playing too long

fixes summoning vvcs not playing their sound

 for combat or other actions