Sidebar with attachment details remains after deleting an attachment

[ocean90]

Originally reported in #36483.

A new bug is that the right sidebar (image info and settings) doesn't get refreshed/cleared out after deleting an image. Seems caused by the Backbone update as far as I see.

[ocean90]

@adamsilverstein Can you take a look at this?

[adamsilverstein]

yep, will do.

[adamsilverstein]

I tracked this down to a bug introduced in Backbone 1.2.3; updating to 1.3.3 fixes this issue (and possibly other related regressions).

See: ​http://backbonejs.org/#changelog

Despite the version number changing from 1.2.3->1.3.3 this version of Backbone is primarily a bug fix release and is a much smaller change than our last Backbone upgrade. Regardless, would appreciate a review/testing and of this update. Also, we should probably get this in ASAP so it we can catch any potential regressions.

In 37099.diff​: Upgrade Backbone to the latest production version - 1.3.3, fixing some bugs around change events for collection models.

[ocean90]

In 37723:

External Libraries: Update Backbone to version 1.3.3.

Changelog: ​https://cdn.rawgit.com/jashkenas/backbone/1.3.3/index.html#changelog
Diff: ​https://github.com/jashkenas/backbone/compare/1.2.3...1.3.3

Includes a unit test to ensure that the minified version doesn't include sourceMappingURL.

Props adamsilverstein.
Fixes #37099.

[ocean90]

Thanks @adamsilverstein. The minified file shouldn't include the URL to a (non-existent) source map. I added a unit test in [37723] similar to the one we have for jQuery.