Added top GUI overlay.
Rewrote GUI to be relative to screen width. Also added shadows to buttons to improve visibility against a light background.
Added rotating block in lower right corner.
basic concept for a Start Screen and Connect Screen
Moved RotatingBlockCamera out of ARCamera range.
Merge branch 'GUIDesign' of https://github.com/MaartenvE/game1 into GUIDesign

Conflicts:
	Client/Assets/game1scene.unity
Back button quits the application and when reopened restarts the game.
Removed unused code.
Change from multiple scenes to tags, they hide the blocks by not rendering them.
Rename TestCube to GameCube
Add GoalCube to display the goal structure.
Timer class created and a timer is display in the GuiOverlay. The Timer is now currently separate  and just displays 15 minutes.
Spectator Scene + Timer size made bigger  + In StartScreenScene background edited and keepalivefunction for the camera
Revert "Spectator Scene + Timer size made bigger  + In StartScreenScene background edited and keepalivefunction for the camera"

This reverts commit 54450480c07636c955bfc8ab4142d0785d7068b3.
StartScreen with keepalive script for the camera, Timer display size bigger , Build Spectator Scene for spectator option
added qr marker joining / auto-generation. and streamlined the usage of the interface with the new qrmarkers
fixed the merge
Back options fixed for now
Merge branch 'GUIDesign' of https://github.com/MaartenvE/game1 into GUIDesign
The order of the scenes has been set. And small changes in the Qr Code.
Qr Scene edited
Timer added and Spectator Scene with back option