Integrate libzeug into cgsee, add small property example and GUI (ref #138)
close #93 - keyboard focus on canvas interaction
extend win configure script to support for libzeug
add signal library explicitly
Update Readme.md to add libzeug dependency and change CMake dependency to version 2.8.11
Merge pull request #141 from hpicgs/property_example

Integrate libzeug into cgsee, add small property example and GUI (ref #1...
merge master in navigation develop