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

Release 0.66.2

# 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)

…#11398)

…oaded files (#11910)

…xistent user (#11892)

Release 0.69.1

Merge master into develop & Set version to 0.70.0-develop

…11872)

* Provide a dedicated informal german language option

* Use a "virtual" language code de-IN for informal german
The IETF language specification compliant suffix "informal"  did not work with the i18n library used

…ers (#11955)