Update Duration to 0.8.0 and ofxUI master

Updated Duration:
- compiled against latest OF from github ~ 0.8.2 (very few changes required)
- compiled against ofxUI master branch (from Reza Ali) (mostly just some API changes)
- support Linux64 compilation via Makefile and Codeblocks projects

However please note that the latest ofxTextInputField doesn't compile with Linux because of the GLFW clipboard. The #defines don't work for me properly (need to put some of them in the header to work) and even if I fix them there's this problem (no getCocoaWindow on Linux):
../../../addons/ofxTextInputField/src/ofxTextInputField.cpp|346|error: ‘class ofAppBaseWindow’ has no member named ‘getCocoaWindow’|

So in my local version I've commented that code out, not sure if there's a better fix than to bypass the code under Linux.