BK-1453 Refactor imports of buildin python modules in edit/channel.py
BK-1453 Refactor imports of buildin python modules in edit/channel.py

ride90/Booktype,olegpshenichniy/Booktype,eos87/Booktype,sourcefabric/Booktype,MiczFlor/Booktype,sourcefabric/Booktype,olegpshenichniy/Booktype,olegpshenichniy/Booktype,MiczFlor/Booktype,kronoscode/Booktype,danielhjames/Booktype,sourcefabric/Booktype,ride90/Booktype,eos87/Booktype,sourcefabric/Booktype,olegpshenichniy/Booktype,eos87/Booktype,ride90/Booktype,danielhjames/Booktype,danielhjames/Booktype,eos87/Booktype,ride90/Booktype,kronoscode/Booktype,MiczFlor/Booktype,MiczFlor/Booktype,kronoscode/Booktype,eos87/Booktype,danielhjames/Booktype,MiczFlor/Booktype,olegpshenichniy/Booktype,danielhjames/Booktype,ride90/Booktype,sourcefabric/Booktype,kronoscode/Booktype,kronoscode/Booktype