Convert to wagtail 2

wagtailvideos/views/chooser.py

-from __future__ import absolute_import, print_function, unicode_literals
-
 import json
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.shortcuts import get_object_or_404, render
 from wagtail.utils.pagination import paginate
-from wagtail.wagtailadmin.forms import SearchForm
-from wagtail.wagtailadmin.modal_workflow import render_modal_workflow
-from wagtail.wagtailadmin.utils import (
+from wagtail.admin.forms import SearchForm
+from wagtail.admin.modal_workflow import render_modal_workflow
+from wagtail.admin.utils import (
     PermissionPolicyChecker, popular_tags_for_model)
-from wagtail.wagtailcore.models import Collection
-from wagtail.wagtailsearch import index as search_index
+from wagtail.core.models import Collection
+from wagtail.search import index as search_index
 
 from wagtailvideos.forms import get_video_form
 from wagtailvideos.models import Video

wagtailvideos/views/multiple.py

-from __future__ import absolute_import, print_function, unicode_literals
-
 from django.http import HttpResponseBadRequest, JsonResponse
 from django.shortcuts import get_object_or_404, render
 from django.template.loader import render_to_string
 from django.utils.encoding import force_text
 from django.views.decorators.http import require_POST
 from django.views.decorators.vary import vary_on_headers
-from wagtail.wagtailadmin.utils import PermissionPolicyChecker
-from wagtail.wagtailsearch.backends import get_search_backends
+from wagtail.admin.utils import PermissionPolicyChecker
+from wagtail.search.backends import get_search_backends
 
 from wagtailvideos.forms import get_video_form
 from wagtailvideos.models import Video

wagtailvideos/views/videos.py

-from __future__ import absolute_import, print_function, unicode_literals
-
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.http import HttpResponseNotAllowed
 from django.shortcuts import get_object_or_404, redirect, render
 from django.utils.translation import ugettext as _
 from django.views.decorators.vary import vary_on_headers
 from wagtail.utils.pagination import paginate
-from wagtail.wagtailadmin import messages
-from wagtail.wagtailadmin.forms import SearchForm
-from wagtail.wagtailadmin.utils import (
+from wagtail.admin import messages
+from wagtail.admin.forms import SearchForm
+from wagtail.admin.utils import (
     PermissionPolicyChecker, popular_tags_for_model)
-from wagtail.wagtailcore.models import Collection
-from wagtail.wagtailsearch.backends import get_search_backends
+from wagtail.core.models import Collection
+from wagtail.search.backends import get_search_backends
 
 from wagtailvideos import ffmpeg
 from wagtailvideos.forms import VideoTranscodeAdminForm, get_video_form

wagtailvideos/wagtail_hooks.py

-from __future__ import absolute_import, print_function, unicode_literals
-
 from django.conf.urls import include, url
 from django.contrib.staticfiles.templatetags.staticfiles import static
-from django.core import urlresolvers
+from django import urls
 from django.utils.html import format_html, format_html_join
 from django.utils.translation import ugettext_lazy as _
-from wagtail.wagtailadmin.menu import MenuItem
-from wagtail.wagtailcore import hooks
+from wagtail.admin.menu import MenuItem
+from wagtail.core import hooks
 
 from wagtailvideos import urls
 from wagtailvideos.forms import GroupVideoPermissionFormSet
@@ -15,7 +13,7 @@ from wagtailvideos.forms import GroupVideoPermissionFormSet
 @hooks.register('register_admin_urls')
 def register_admin_urls():
     return [
-        url(r'^videos/', include(urls, namespace='wagtailvideos', app_name='wagtailvideos')),
+        url(r'^videos/', include(urls)),
     ]
 
 
@@ -34,7 +32,7 @@ def editor_js():
             window.chooserUrls.videoChooser = '{0}';
         </script>
         """,
-        urlresolvers.reverse('wagtailvideos:chooser')
+        urls.reverse('wagtailvideos:chooser')
     )
 
 
@@ -46,6 +44,6 @@ def register_video_permissions_panel():
 @hooks.register('register_admin_menu_item')
 def register_images_menu_item():
     return MenuItem(
-        _('Videos'), urlresolvers.reverse('wagtailvideos:index'),
+        _('Videos'), urls.reverse('wagtailvideos:index'),
         name='videos', classnames='icon icon-media', order=300
     )

wagtailvideos/widgets.py

-from __future__ import absolute_import, print_function, unicode_literals
-
 import json
 
 from django.template.loader import render_to_string
 from django.utils.translation import ugettext_lazy as _
-from wagtail.wagtailadmin.widgets import AdminChooser
+from wagtail.admin.widgets import AdminChooser
 
 from wagtailvideos.models import Video