Move duplicate_found handler into ChooserUploadView
Move duplicate_found handler into ChooserUploadView

zerolab/wagtail,thenewguy/wagtail,wagtail/wagtail,zerolab/wagtail,rsalmaso/wagtail,wagtail/wagtail,wagtail/wagtail,wagtail/wagtail,rsalmaso/wagtail,zerolab/wagtail,thenewguy/wagtail,wagtail/wagtail,zerolab/wagtail,thenewguy/wagtail,thenewguy/wagtail,rsalmaso/wagtail,zerolab/wagtail,rsalmaso/wagtail,thenewguy/wagtail,rsalmaso/wagtail