Ability to share the VR experience

[risonsimon]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
One of the consistent requests that we heard during user interviews is the ability to share the experience. For example, the teacher should be able to share the VR experience without the student easily.

There should be a share button which will generate the url to the VR experience that can shared with the student.