Add smarter objects selector widget into Djblets

Review Request #10214 — Created Oct. 11, 2018 and submitted — Latest diff uploaded

Information

Djblets
master
25eac0d...

Reviewers

This change adds a smarter objects selector widget from Review Board 4.0
into Djblets. This is a form field widget and Backbone view, which must
be extended to be useful.

See /r/10215.

I ran all tests with ./tests/runtests.py. No errors were thrown.

With the /r/10215 Review Board patch, I navigated to
admin/db/scmtools/repository/add/. Next to "Users with access:", the
smarter user selector widget appeared. This widget extends the smarter
objects selector widget.