Change list for v1.46

Whats new:

* datum fields created in the first corpus are not copied to new corpora
* you can see all the datum in a session by clicking on a link
* first draft of lots of new map reduce views of the data for cleaning and data visualizations for cleaning and searching data
* added syntacticCategory line to datum which is normally hidden but can be used to help cleaning or visualizing data by syntactic category or for search
* replaced Andika font with a less comic-sans font see http://www.comicsanscriminal.com/
* made the unicode drag and drop minimized by default, and put it on all dashboards. Im not sure why it wasn't there, but i think its because the folks at the hackathon who made the new dashboards have an IPA keyboard so they didn't think people would use it, but apparently field methods students people are using it..