Changed conversation VC date comparison for efficiency/clarity.
Changed conversation VC date comparison for efficiency/clarity.

layerhq/Atlas-Messenger-iOS,ropik/Atlas-Messenger-iOS,InterfaceInc/Atlas-Messenger-iOS,InterfaceInc/Atlas-Messenger-iOS,InterfaceInc/Atlas-Messenger-iOS,Eynaliyev/Atlas-Messenger-iOS,ropik/Atlas-Messenger-iOS,Eynaliyev/Atlas-Messenger-iOS,layerhq/Atlas-Messenger-iOS