wip: Added description parsing for stix objects without properties
wip: Added description parsing for stix objects without properties

Signed-off-by: chrisr3d <0a606d7bc3dc959864b15c1fada5094a38467dfe@gmail.com>

FloatingGhost/MISP,FIRSTdotorg/MISP,TheDr1ver/MISP,SteveClement/MISP,MISP/MISP,devnull-/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,TheDr1ver/MISP,SteveClement/MISP,devnull-/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,Rafiot/MISP,SteveClement/MISP,Rafiot/MISP,TheDr1ver/MISP,TheDr1ver/MISP,FloatingGhost/MISP,Rafiot/MISP,FloatingGhost/MISP,devnull-/MISP,SteveClement/MISP,Rafiot/MISP,MISP/MISP,devnull-/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP