GitLab

Wrap transcode HTML in transcode block

Extract transcodes to reusable function

Fix copies

Using Cloud Storage could generate urls like:

`https://storage.googleapis.com/<BUCKET_NAME>/<PATH>/testwebm?Expires=1612931745&GoogleAccessId=<ACCOUNT>&Signature=<SIGNATURE>`

Passing parameters to the URL returns None in mime.guess_type(url)

Also, extracting the mimetype to some property that can be reused. Similar to https://github.com/wagtail/wagtail/blob/master/wagtail/documents/models.py#L170

Fixes #56 proper call to paginator

Migrations fix

Tracks

Conditionally show some things only if modeladmin is installed, addded links for editing/adding tracks

Added ability to change the video model

Blocks etc