Adds a link in the unread bar to jump to first unread message

Minor Grammar Fixup

Minor grammar fixup in both interface and source. There_is_no_integrations should be There_are_no_integrations

Add livechat package as default

Tabbar rework

Created and pushed by LingoHub.

Merge branch 'feature/app-language-setting' of https://github.com/sweetvvck/Rocket.Chat into sweetvvck-feature/app-language-setting

Merge branch 'allow-disable-form-login' of https://github.com/LearnersGuild/Rocket.Chat into LearnersGuild-allow-disable-form-login

now it only on `condition` parameter which implements their
own logic, including checking for permission =)