Merge pull request #3 from rdumusc/master

Merge PixelStream and ParallelPixelStream
ContentInteractionDelegates handle the touch/mouse gestures received by the ContentWindowManager according to content type.
Build compliance Qt < 4.8
WebBrowser click and scroll
Added more touch gestures to WebKit
Fixed the touch interaction (position normalizing)
Use Qstring where it makes sense, refactor boost serialization to separate file, fix Dock positioning, fix Dock preview image generation crash
Fix log output and error image loading, fix resize of content opened via Dock, minor cleanups
Add parameter of session to load at application startup
Support opening of sessions via Dock
Merge branch 'master' into interactiondelegates
Code review
Code review fixes and changes