Summary:
Fixes T6084. Changes:
- Rename `phabricator.show-beta-applications` to `phabricator.show-prototypes`, to reinforce that these include early-development applications.
- Migrate the config setting.
- Add an explicit "no support" banner to the config page.
- Rename "Beta" to "Prototype" in the UI.
- Use "bomb" icon instead of "half star" icon.
- Document prototype applications in more detail.
- Explicitly document that we do not support these applications.
Test Plan:
- Ran migration.
- Resolved "obsolete config" issue.
- Viewed config setting.
- Browsed prototypes in Applications app.
- Viewed documentation.
Reviewers: chad, btrahan
Reviewed By: btrahan
Subscribers: epriestley, hach-que
Maniphest Tasks: T6084
Differential Revision: https://secure.phabricator.com/D10493
