Bumps [sinon](https://github.com/sinonjs/sinon) from 7.0.0 to 7.1.0.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/docs/changelog.md)
- [Commits](https://github.com/sinonjs/sinon/commits

)

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

Fix jshint es version (for scrutinizer)

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

Enhance message sending UX

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

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

Save compose changes as drafts

Fix outdated composer.lock on refactor/vue branch

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>

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

Add back next/previous message shortcut

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

Add back desktop notifications for new messages

Bump webpack from 4.22.0 to 4.23.0

Collapse unimportant folders by default

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

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

Disable slow Scrutinizer security analysis

Bumps [webpack](https://github.com/webpack/webpack) from 4.22.0 to 4.23.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.22.0...v4.23.0

)

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

Add back background sync of inboxes

Remove dead foldersyncservice

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>

Vue envelope popover menu

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>

Backport master changes to Vue rework branch

Move sources to /src dir

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>

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

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

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

Fixes https://github.com/nextcloud/mail/issues/995

.

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