Merge master into develop & Set version to 0.67.0-develop

…11295)

…ptout (#11254)

Closes #11198 

- [x] Show all steps on info box
- [x] Properly display errors in registration process of admin user
- [x] Break steps in subtemplates
- [x] Redesign "Register Server" step
      ![Register Server](https://user-images.githubusercontent.com/2263066/42013253-cd691bc2-7a72-11e8-8832-fe9ccd9e89b4.png)
- [x] Update end-to-end tests

…#11333)

When the integrations has a script that access some kind of async (made sync by Fibers) method the VM timeout would be fired after the timeout time and would generate some zoombie fibers cousing the oplog tailing (that uses Fibers) to stop working util a cursor timeout.

…osition operators (#11335)

# Conflicts:
#	.docker/Dockerfile.rhel
#	.sandstorm/sandstorm-pkgdef.capnp
#	.travis/snap.sh
#	package.json
#	packages/rocketchat-lib/rocketchat.info

Merge master into develop & Set version to 0.67.0-develop

@RocketChat/core 

Closes #9990

This pull request properly brings the web app manifest up-to-date to the current specification and resolves the incorrect start_url origin and the path to the broken images as seen in this screenshot.

This resolves the unwanted and incorrect behavior experienced in both Google Chrome and Mozilla Firefox for Android.

![image](https://user-images.githubusercontent.com/643503/36929663-052fe33c-1e49-11e8-8a68-3d8e666d30e8.png)

* Fix icons in channels message popup

* Fix descriptions in slash commands message popup

* Add scrolling in message popup

This pull request aims to format the SVG file containing the UI icons.

- [x] Fix indentation
- [x] Sort icons alphabetically by `id`
- [x] Recover icons lost in c1a5d57

# Conflicts:
#	.docker/Dockerfile.rhel
#	.sandstorm/sandstorm-pkgdef.capnp
#	.travis/snap.sh
#	package.json
#	packages/rocketchat-lib/rocketchat.info

Merge master into develop & Set version to 0.67.0-develop

* improved callbacks promises run

* fixed default fname

…#11398)

…m.usernames` (#10749)

[BREAK] Remove cache layer and internal calculated property `room.usernames`

…0.67.0