Update lib/booki/messaging/models.py
Update lib/booki/messaging/models.py
rob-hills/Booktype,aerkalov/Booktype,danielhjames/Booktype,MiczFlor/Booktype,kronoscode/Booktype,MiczFlor/Booktype,eos87/Booktype,MiczFlor/Booktype,btat/Booktype,btat/Booktype,aerkalov/Booktype,okffi/booktype,eos87/Booktype,kronoscode/Booktype,okffi/booktype,danielhjames/Booktype,danielhjames/Booktype,okffi/booktype,danielhjames/Booktype,sourcefabric/Booktype,okffi/booktype,olegpshenichniy/Booktype,eos87/Booktype,ride90/Booktype,olegpshenichniy/Booktype,MiczFlor/Booktype,eos87/Booktype,rob-hills/Booktype,sourcefabric/Booktype,MiczFlor/Booktype,aerkalov/Booktype,danielhjames/Booktype,olegpshenichniy/Booktype,sourcefabric/Booktype,kronoscode/Booktype,olegpshenichniy/Booktype,kronoscode/Booktype,eos87/Booktype,sourcefabric/Booktype,btat/Booktype,ride90/Booktype,ride90/Booktype,rob-hills/Booktype,ride90/Booktype,ride90/Booktype,kronoscode/Booktype,btat/Booktype,rob-hills/Booktype,okffi/booktype,olegpshenichniy/Booktype,sourcefabric/Booktype