Various fixes to Sandstorm notifications

Action links improvements

- Adds a default style to buttons
- Remove <meta> tag from message

LingoHub based on develop

Manual push by LingoHub User: Gabriel Engel.
Project: Rocket.Chat

Made with  by https://lingohub.com

* Added option to populate Rocket Chat with LDAP users (import them)

* fix syntax

* Fix multiple notifications (resolve #3517) and close after click

* Fix replacing notification for different messages from the same room

* Remove uncessary log

* Refactor login/registration code

* New setting to add custom translations

* Add option to not require password confirmation on signup

* Add Custom Fields for registration

* Closes #4036; Do nore remove roles when editing user data

* Add arrow to indicate fields of type select

Merge branch 'feature/read-only-rooms' of https://github.com/4thParty/strata.chat into feature/read-only-rooms

# Conflicts:
#	packages/rocketchat-authorization/server/startup.coffee

Handle shared locations better when new shares are disabled

Added File Uploaded text on attachments to i18n

Check timestamp before notifying users

Improvements to pinned items

LingoHub based on develop

Manual push by LingoHub User: Gabriel Engel.
Project: Rocket.Chat

Made with  by https://lingohub.com

LingoHub based on develop