separated get and post method handling for ChooseParent view
separated get and post method handling for ChooseParent view

tomdyson/wagtailmodeladmin,ababic/wagtailmodeladmin,ababic/wagtailmodeladmin,tomdyson/wagtailmodeladmin,rkhleics/wagtailmodeladmin,rkhleics/wagtailmodeladmin