Fix previous drafts not being deleted from the cache

Add route for drafts

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

Prevent Thread's avatar header to overlap message's sender and subject.

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Add unread mail dashboard widget

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

Signed-off-by: Cyrille Bollu <cyrpub@bollu.be>

Signed-off-by: Cyrille Bollu <cyrpub@bollu.be>

Signed-off-by: Cyrille Bollu <cyrpub@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>

Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.12.3 to 7.12.7.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.12.7/packages/babel-core

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.12.1 to 7.12.7.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.12.7/packages/babel-preset-env

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [@vue/babel-preset-app](https://github.com/vuejs/vue-cli/tree/HEAD/packages/@vue/babel-preset-app) from 4.5.8 to 4.5.9.
- [Release notes](https://github.com/vuejs/vue-cli/releases)
- [Changelog](https://github.com/vuejs/vue-cli/blob/v4.5.9/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-cli/commits/v4.5.9/packages/@vue/babel-preset-app

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.7.2 to 13.8.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/compare/13.7.2...13.8.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [vimeo/psalm](https://github.com/vimeo/psalm) from 4.1.1 to 4.2.1.
- [Release notes](https://github.com/vimeo/psalm/releases)
- [Commits](https://github.com/vimeo/psalm/compare/4.1.1...4.2.1

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [php-webdriver/webdriver](https://github.com/php-webdriver/php-webdriver) from 1.8.3 to 1.9.0.
- [Release notes](https://github.com/php-webdriver/php-webdriver/releases)
- [Changelog](https://github.com/php-webdriver/php-webdriver/blob/main/CHANGELOG.md)
- [Commits](https://github.com/php-webdriver/php-webdriver/compare/1.8.3...1.9.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps pear-pear.horde.org/Horde_Smtp from 1.9.5 to 1.9.6.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Recommend gzip compression for exported threads data

Adds the ckeditor list plugin

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Cyrille Bollu <cyr.debian@bollu.be>
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>