initial work on qt 5.3.2
install platform themes
use default cursor everywhere
only use fusion style on KDE if it exists
more use of default cursor
fix console progress dialog for qtwebkit
fix packages check box positioning
qt 5.3.2 windows work
merge from master

Merge remote-tracking branch 'origin/master' into feature/qt5.3.2

Conflicts:
	dependencies/windows/install-dependencies.cmd
qt 5.4 changes to desktop CMakeLists
work on windows qt 5.4 / gcc 4.9.1
build with install rpath on linux (pickup local qt deps)
Merge branch 'feature/qt5.3.2' of github.com:rstudio/rstudio into feature/qt5.3.2
add WebChannel to installer
windows installer work for qt 5.4
use gcc 4.9.1 on 64-bit windows
put debugger types in anonymous namespace (prevent gcc 4.9 warning)
switch back to using the pointer cursor
move anonymous namesapce declaration
enable pdf.js on linux and windows (still doesn't fully work)