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Create manager limit modal (modeled off of the promote-curator modal) which will be displayed if the user clicks promote when the manager limit has already been reached.

Set up state, tracking the number of managers the limits used to display info to the user. Handle new error response when trying to promote a curator.

Bumps [ws](https://github.com/websockets/ws) from 5.2.2 to 5.2.3. **This update includes a security fix.**
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/compare/5.2.2...5.2.3)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Merge pull request #5583 from LLK/dependabot/npm_and_yarn/scratch-gui-0.1.0-prerelease.20210610000654

Bumps [scratch-gui](https://github.com/LLK/scratch-gui) from 0.1.0-prerelease.20210609041525 to 0.1.0-prerelease.20210610000654.
- [Release notes](https://github.com/LLK/scratch-gui/releases)
- [Commits](https://github.com/LLK/scratch-gui/compare/0.1.0-prerelease.20210609041525...0.1.0-prerelease.20210610000654)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [scratch-l10n](https://github.com/LLK/scratch-l10n) from 3.11.20210609031630 to 3.11.20210610031613.
- [Release notes](https://github.com/LLK/scratch-l10n/releases)
- [Commits](https://github.com/LLK/scratch-l10n/compare/3.11.20210609031630...3.11.20210610031613)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Hide validation message on click outside 

handle project comments turned off

When a user gets muted, update mute status in the session

Merge pull request #5571 from LLK/dependabot/npm_and_yarn/scratch-gui-0.1.0-prerelease.20210609041525

Bumps [scratch-gui](https://github.com/LLK/scratch-gui) from 0.1.0-prerelease.20210606094924 to 0.1.0-prerelease.20210609041525.
- [Release notes](https://github.com/LLK/scratch-gui/releases)
- [Commits](https://github.com/LLK/scratch-gui/compare/0.1.0-prerelease.20210606094924...0.1.0-prerelease.20210609041525)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [scratch-l10n](https://github.com/LLK/scratch-l10n) from 3.11.20210608031537 to 3.11.20210609031630.
- [Release notes](https://github.com/LLK/scratch-l10n/releases)
- [Commits](https://github.com/LLK/scratch-l10n/compare/3.11.20210608031537...3.11.20210609031630)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [scratch-l10n](https://github.com/LLK/scratch-l10n) from 3.11.20210606031618 to 3.11.20210608031537.
- [Release notes](https://github.com/LLK/scratch-l10n/releases)
- [Commits](https://github.com/LLK/scratch-l10n/compare/3.11.20210606031618...3.11.20210608031537)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

[Develop] Release 2021-06-02