Add a many-to-many relationship between measures and third parties,
surfaced as a measures tab on the third party detail page and a third
parties tab on the measure detail page. Each side gets a paginated
list with a link/unlink dialog.
Also remove the right-hand drawer on the measure detail page and
expose the state as a badge in the page header, mirroring how the
compliance page surfaces its active flag.
Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>
