Upgrade jQuery and jquery-ui for JSTree v3
Work around jQuery bug in window size calculations

http://stackoverflow.com/a/15607372/10840
INCOMPLETE JSTree upgrade
Fix JSTree conditional select
Fix JSTree styles
Upgrade jquery-ui to 1.11.2
Fix drag/drop in tree
Clear previous selection on insert question in tree
Fix bug in refreshCurrentMug on drag/drop question
Prevent move that would create duplicate path
Fix drag/drop outside of tree
Fix styling of error icons in tree
Update JSTree API calls for v3
Fix tree icons for mutli-select items and unknowns
Select a question on load form

Disable JSTree worker: non-async load -> faster
Select previous node on delete
Move profiling test XML to text files
Fix disappearing error indicator
Fix drag-drop after load saved in stand-alone
Fix error icons in tree

NOTE the code in createQuestion that threw an error if the question was not inserted was not being executed, and itemsets (pre itemset plugin) depend on this error not being thrown.