alert user when done
Merge branch 'master' into pradeep
Code review for completed notification.
Need to update counter independent of hinting policy.
code refactoring for equation done handler
Discard empty time units when populating choices
in the units control.
fixed image problem in author mode
completeness alert done after code review
code review changes
fixed node spacing in author mode
reselecting the input in authr mode in an expression
Merge branch 'ritesh' of https://github.com/bvds/LaitsV3 into ritesh

Conflicts:
	www/js/con-author.js
Merge branch 'master' into pradeep
Code review for problem completed notification.
Moved variable testing completeness to model.js
Keep track of completed problems even after hint is sent.
Still need to move check from controller.js to con-student.js
since it references _PM.  See comments in code.
Merge branch 'master' into sachin
Review equationDoneHandler.  Merge functions into controller.js
moved notifyDoneness code to con-student from controller
Merge branch 'master' into ritesh
Merge branch 'pradeep' of https://github.com/bvds/LaitsV3 into pradeep
Formatting changes.  Don't call author module when handling
inputs.
Merge branch 'master' into ritesh