Use quaternions to calculate vehicle direction vector
Setting non-zero slip1 appears to solve turn slowdown problem
Car model blinking fixed. Fix was tested on HP ProBook 4520s.
Logging-related changes

ControlAlgorithm will report algorithm filename as id
SimulationRunner will add timestamp to log file name to avoid overwriting.
Ported center finding code from car
CameraSimulator renders frame without CameraGrabber object
find_package(Qt5Quick REQUIRED Qt5Quick5.2.1)
Updated line finding code
Implemented PID regulator in Lua.

Also added ControlAlgorithm::appendToLuaPath() which modifies Lua's package.path
to allow Lua to find pid.lua when requiring it from simple_algorithm.lua
Anti-aliasing enabled
Code cleanup after making camera simulator independent from QML scene
Merge branch 'independent-cam'
Merge branch 'master' of github.com:freescale-cup-simulator/simulator
modified:   src/libqmlogre
Merge branch 'master' into new-gui

Conflicts:
	src/global_renderer.cc
	src/global_renderer.h
Anisotropic filtering enabled