allow changing of oculus rift parameters
Add Portal.py containing stubs for Portals and PortalManagers.
Add PortalPreView and field has changed mechanism on portal group node.
Move portal texture creation to client and display black portal.
Make first version of hardcoded portal working.
Adjust portal settings.
Add debug visualizations for portal sceens and eyes.
Strange update of portal view. Perspectively not completely correct yet.
Make search of platform nodes generic.2
Fix viewing bug in portal display.
Adapt render masks and textured quad group name to only display portal for correct view.
Add blue borders to portals.
Add check for user being behind a portal and apply default texture then.
Use WorldTransform for pre view update and set near clipping plane properly.
Connect portal pipeline values and set proper render masks.
Make portal size parametrizable.
Always use two eyes for slots and portal views.
Minor fixes in Client Portal.
Adjust appearance and config settings.
Distribute portal nodes on creation in order to add portals during runtime.