#16 evaluation Tried to install hub but failed miserably, so here we go.

Added code for evaluating tracker performance using MOTA and MOTP measurements. For our application i suppose MOTA is the more interesting one. More info about these algorithms are found at: 
http://jivp.eurasipjournals.com/content/pdf/1687-5281-2008-246309.pdf

I also fixed the time stamps in the debug log window.

The reason this pull request isn't linked with the proper issue is that i failed miserably when trying to install the hub-thingy, and ran out of time. Wouls appreciate some assistance in getting that stuff to work on windows.