Merge pull request #115 from thefinestsieve/beta

Added icon for Vanilla Crusade option
Unrelated misc. define tweaks
All effects of decadence as well as accrual wiped from defines.lua
Removed decadence faction effects and CB
Merge branch 'beta' into no_decadence

Conflicts:
	EMF/EMF_changelog.txt
Merge pull request #116 from zijistark/no_decadence

Decadence effects and hard-coded accrual nullified