Render Graph, Render Table messaging bugs
Merge branch 'master' into ritesh
Code review for handling solutions with errors.
Suggesed change to findSolution() return format.
Changed behavior of isComplete() in model.js
Few review responses to message in RenderGraph, RenderTable and bug2354
Bug 2343 - default inputstyle to algebraic if not defined,corrupt 'is' log
ncluding input style "is" when loading problem should be optional.#	www/util/
changed pedagogical module for saving state
updated pedagogical module
changed documentation for state
added disable handler for controlling the handler calls while closing node editor
Merge branch 'master' into haoxuan3
Also, code review for saving counters
into state table.  Merged getMessage() into message()
changed pedagogical module for saving state
Adding message for Doneness in Coached Mode.
updated pedagogical module
Modifing the function name in Controller.
changed documentation for state
Merge branch 'master' into haoxuan3
making vertex draggable
Merge branch 'refactor'
Merge branch 'master' into megha
Code review for complete model check in
student mode.  Moved hint to pedagogical module.
Moved checkDonnessMessage() from controller.js to con-student.js