See #166
This PR changes validation rules for `permissions` field of the manifest.
When present, the field is expected to represent a dictionary of {slug: reason}
key-value pairs. Previous format was a list of [slug].
Validation for these reason strings ensures that a reason is a non-empty string,
no longer than 64 characters, and doesn't end in punctuation.
No visible changes on the website are done in this PR.
`/api/v1/extensions/` endpoint now returns `permissions` field as a dict
{slug: reason}, where reason is taken from `VersionPermission.help` field
managed via admin.
The new values are stored in metadata, but the `Version.permissions` model
is not changing yet, and thus it doesn't store the reason values.
We can decide to keep the model as is and lookup the reasons from
`Version.file.metadata`, but this needs more thought.
Reviewed-on: #168
Reviewed-by: Anna Sirota <annasirota@noreply.localhost>
Oleg Komarov
e3ca4daed7
