Merge pull request #330 from tribal-tec/master

Fix readback and assemble frames, replace deprecated ICommand funcs
Add syncObject to Config from co::ObjectHandler
Merge pull request #331 from eile/master

Add syncObject to ObjectHandler
Qt stubs
First version rendering
Event handling stubs
Move creation of GLWidget to main thread (breaks event handling for now)
Implement event handling, fix makeCurrent() errors
Context creation, init glew!
Win32 build fixes, fullscreen handling, Win32 execution fixes, cleanups
Fix X11 fullscreen
Context sharing
Cleanup Font and WindowSystem
Font rendering
GLWidget destruction
No font rendering on OSX right now
Cleanup
More cleanup
Offscreen handling
Fix after rebase