Revisions modules should not rely on global settings

[ericlewis]

Some revisions Backbone modules currently depend on the global settings object (_wpRevisionsSettings).

Here's an example.

This is an anti-pattern and tends to make these modules non-reusable.

[ericlewis]

In attachment:30219.diff​, move globally referenced initial state for wp.revisions.model.FrameState to initializing attributes hash.

[ericlewis]

attachment:30219.2.diff​ supercedes attachment:30219.diff​ and removes all dependence on global settings.

[wonderboymusic]

In 30131:

Revisions modules should not rely on global settings:

• Only pass in global settings on init, this allows the classes to be used agnostically elsewhere
• Clean up some erroneous/weird Backbone syntax

Props ericlewis, wonderboymusic.
Fixes #30219.

[ocean90]

Follow-up: #30672