Added momentjs lib; modified thread date time to use moment's calendar format; added datetime of message to message in messageitem
Changes to mock data to check formatting of really long names and messages; formatting changes to allow 2 line summaries with ellipses and position of image avatar in threadlist
Sample really long messages in thread. Formatting changes to support html in messages as well as extremely long messages. Styling changes introducing gradients for messages (TODO: colors could be better)
Styling changes to get layouts to work properly; appears to be a bug in DataList such that a FittableColumn in control resizes the control to 100% of window width instead of parent container width. Had to use CSS instead (Not optimal)
Merge branch 'feature/messageitemwork'