Bumps [vue](https://github.com/vuejs/vue) and [vue-template-compiler](https://github.com/vuejs/vue). These dependencies needed to be updated together.

Updates `vue` from 2.6.10 to 2.6.11
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.6.10...v2.6.11)

Updates `vue-template-compiler` from 2.6.10 to 2.6.11
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.6.10...v2.6.11

)

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

Bumps [core-js](https://github.com/zloirock/core-js) from 3.4.8 to 3.5.0.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v3.4.8...v3.5.0

)

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

Bumps [phan/phan](https://github.com/phan/phan) from 2.4.4 to 2.4.5.
- [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/2.4.4...2.4.5

)

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

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

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

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

Downgrade CKEditor to 15.x

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

Merge pull request #2342 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-theme-lark-16.0.0

Merge pull request #2341 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-block-quote-16.0.0

Bumps [@ckeditor/ckeditor5-theme-lark](https://github.com/ckeditor/ckeditor5-theme-lark) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-theme-lark/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-theme-lark/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-theme-lark/compare/v15.0.0...v16.0.0

)

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

Merge pull request #2340 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-essentials-16.0.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 3.2.1 to 3.3.0.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v3.2.1...v3.3.0

)

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

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.7.4 to 7.7.6.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.7.4...v7.7.6

)

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

Bumps [@ckeditor/ckeditor5-block-quote](https://github.com/ckeditor/ckeditor5-block-quote) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-block-quote/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-block-quote/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-block-quote/compare/v15.0.0...v16.0.0

)

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

Bumps [@ckeditor/ckeditor5-essentials](https://github.com/ckeditor/ckeditor5-essentials) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-essentials/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-essentials/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-essentials/compare/v15.0.0...v16.0.0

)

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

Bumps [core-js](https://github.com/zloirock/core-js) from 3.4.7 to 3.4.8.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v3.4.7...v3.4.8

)

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

Fix empty password for provisioned account

Passwords can't just be `null` but also an empty string. The code did
not handle that properly. Now checking against `emtpy` so both `null`
and `''` trigger shortcut evaluation and prevent decrypring of an
invalid value.

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

Merge pull request #2331 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-editor-balloon-16.0.0

Merge pull request #2328 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-basic-styles-16.0.0

Bumps [@ckeditor/ckeditor5-editor-balloon](https://github.com/ckeditor/ckeditor5-editor-balloon) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-editor-balloon/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-editor-balloon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-editor-balloon/compare/v15.0.0...v16.0.0

)

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

Bumps [@ckeditor/ckeditor5-basic-styles](https://github.com/ckeditor/ckeditor5-basic-styles) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-basic-styles/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-basic-styles/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-basic-styles/compare/v15.0.0...v16.0.0

)

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

Bumps [@ckeditor/ckeditor5-link](https://github.com/ckeditor/ckeditor5-link) from 15.0.0 to 16.0.0.
- [Release notes](https://github.com/ckeditor/ckeditor5-link/releases)
- [Changelog](https://github.com/ckeditor/ckeditor5-link/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ckeditor/ckeditor5-link/compare/v15.0.0...v16.0.0

)

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

Merge pull request #2332 from nextcloud/dependabot/npm_and_yarn/ckeditor/ckeditor5-build-balloon-16.0.0