log messages added for parse error, focus in and out, wrong initial values
Merge branch 'sachin' of github.com:bvds/LaitsV3 into sachin
node not defined message changed
incorrect equation syntax parser error log message added
Merge branch 'master' into sachin
changes made to controller.js for logging messages for wrong initial value and equation
log messages changed as per the new java version
small change to the heading in the file
code changes as per the code review for documentation and the logging messages.
student window in and out of focus log messages added to the documentation
node id added to the messages
Log messages completed as per the changes, updates made in the documentation as well.
delete node log messages values were missing udpated them
Merge branch 'master' into sachin

Conflicts:
	www/js/calculations.js
	www/js/draw-model.js
	www/js/main.js
merge master to sachin
Made further changes to the logging documentation.
I didn't like the "demo" being recorded as a separate
"get-help" message.  The logging format for "demo" should
be the same as for "correct" and "incorrect"
resetting it to one merge before
adding pedagogical module.js to undo merge issues made earlier
Merge branch 'master' into sachin
merge issues for calculations.js fixed and tested on local branch