Archive snapshots of websites locally (#672)

* Add basic HTML snapshots

* Implement asset list

* Add snapshot creation tests

* Add deletion tests

* Show file size

* Remove snapshots

* Create new snapshots

* Switch to single-file

* CSS tweak

* Remove auto refresh

* Show delete link when there is no file yet

* Add current date to display name

* Add flag for snapshot support

* Add option for disabling automatic snapshots

* Make snapshots sharable

* Document image variants

* Update README.md

* Add migrations

* Fix tests

bookmarks/urls.py

@@ -44,6 +44,12 @@ urlpatterns = [
         views.bookmarks.details_modal,
         name="details_modal",
     ),
+    # Assets
+    path(
+        "assets/<int:asset_id>",
+        views.assets.view,
+        name="assets.view",
+    ),
     # Partials
     path(
         "bookmarks/partials/bookmark-list/active",
@@ -75,6 +81,11 @@ urlpatterns = [
         partials.shared_tag_cloud,
         name="partials.tag_cloud.shared",
     ),
+    path(
+        "bookmarks/partials/details-form/<int:bookmark_id>",
+        partials.details_form,
+        name="partials.details_form",
+    ),
     # Settings
     path("settings", views.settings.general, name="settings.index"),
     path("settings/general", views.settings.general, name="settings.general"),