A license should be associated with the user comments

- For an example, see bottom of the following [page](http://developer.qt.nokia.com/doc/qt-4.8/qml-visualdatamodel.html#details)
- Similarly I propose we integrate the [Attribution-ShareAlike 2.5 Generic ](https://creativecommons.org/licenses/by-sa/2.5/) to the midas comment module.
