* Bump Django
* Render error messages in English
* Remove unused USE_L10N option
* Associate errors and help texts with form fields
* Make checkbox inputs clickable
* Change cancel button text
* Fix tests
* add bundle model and query logic
* cleanup tests
* add basic form
* add success message
* Add form tests
* Add bundle list view
* fix edit view
* Add remove button
* Add basic preview logic
* Make pagination use absolute URLs
* Hide bookmark edits when rendering preview
* Render bookmark list in preview
* Reorder bundles
* Show bundles in bookmark view
* Make bookmark search respect selected bundle
* UI tweaks
* Fix bookmark scope
* Improve bundle preview
* Skip preview if form is submitted
* Show correct preview after invalid form submission
* Add option to hide bundles
* Merge new migrations
* Add tests for bundle menu
* Improve check for preview being removed
