Query Workbench Doc Editor needs a variety of Improvements

Perry suggested a number of improvements that we should implement in the new document editor:

1. Pressing return from the "where" clause should automatically execute
2. Perhaps needs a progress meter if the query will run for a bit of time?
3. Show horizontal and vertical scroll bars when the results extend beyond the screen.
4. Vertically align results so that the buttons/key are shown at the top instead of the middle of each document.
5. Support bulk editing to modify multiple documents the same way.
6. Sorting columns by clicking on the column header.
7. Add new document functionality.

And in the longer term:

• Create a N1QL DML generator that helps users create and try out DML queries in a less risky fashion than regular queries.