Drawing routine for TFTD tanks - coelacanth and displacer

Require additional testing.
Function renamed
Drawing routine for hallucinoids
Drawing routine for aquanauts (depth indicator needed)
Drawing routines for aquatoids and biodrones
Missing flavour text
Giving hallucinoid and biodrone constant animation

Possible candidate for unhardcoding
Collapsing animation for biodrone
Flavour text update
More text
Drawing routines for tftd civilians
Drawing routines for remaining humanoid aliens tested
Drawing routine for tentaculats
Drawing routine for triscenes
Drawing routine for xarquids
Drawing routine for tftd zombies

need testing
Merge branch 'master' into drawingRoutines
Merge branch 'master' into drawingRoutines

Conflicts:
	src/Battlescape/UnitSprite.cpp
Introducing deathFrames ruleset variable
Initial tftd tanks adjustments