Mozartize the favicon lib

Fix div by zero in important messages feature extractor

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

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

Use proper exit code for composer lint

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

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

Use a naive bayes algorithm to find important messages

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

Fix mailvelope integration by switching to the API version

Add background database cleanup

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

Add mark as junk on emails

* Orphaned mailboxes
* Orphaned messages
* Orphaned aliases
* Orphaned collected recipients

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

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

Signed-off-by: GretaD <gretadoci@gmail.com>
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Make priority inbox sections collapsible

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

Optimize the background sync logic

Delete all user's accounts when the user is deleted

Fix vertical space between sections in priority inbox

Merge pull request #3089 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-dev-webpack-plugin-9.0.1

Bumps [node-sass](https://github.com/sass/node-sass) from 4.14.0 to 4.14.1.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/node-sass/compare/v4.14.0...v4.14.1

)

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

Bumps symfony/polyfill-php70 from 1.15.0 to 1.16.0.

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

Bumps [@ckeditor/ckeditor5-dev-webpack-plugin](https://github.com/ckeditor/ckeditor5-dev) from 9.0.0 to 9.0.1.
- [Release notes](https://github.com/ckeditor/ckeditor5-dev/releases)
- [Commits](https://github.com/ckeditor/ckeditor5-dev/compare/@ckeditor/ckeditor5-dev-webpack-plugin@9.0.0...@ckeditor/ckeditor5-dev-webpack-plugin@9.0.1

)

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

Bumps [mocha](https://github.com/mochajs/mocha) from 7.1.1 to 7.1.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mochajs/mocha/compare/v7.1.1...v7.1.2

)

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

Bumps [phan/phan](https://github.com/phan/phan) from 2.7.2 to 3.0.0.
- [Release notes](https://github.com/phan/phan/releases)
- [Changelog](https://github.com/phan/phan/blob/master/NEWS.md)
- [Commits](https://github.com/phan/phan/compare/2.7.2...3.0.0

)

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