Changed some parts in models.py of crm
Changed some parts in models.py of crm

tfroehlich82/koalixcrm,tfroehlich82/koalixcrm,tfroehlich82/koalixcrm,scaphilo/koalixcrm,scaphilo/koalixcrm,Swappsco/koalixerp,Swappsco/koalixerp,tfroehlich82/koalixcrm,Swappsco/koalixerp,dario61081/koalixcrm,scaphilo/koalixcrm,dario61081/koalixcrm,Swappsco/koalixerp