Changing wording of isle problems: rate --> probability
math probs extra text fix

removed the extra text from math probs
fixed issue with extra scroll wheels

Fixed issue where extra scroll wheels would appear on smaller screens
changes for render graph size
Changes for new node placement

Places new nodes in top left corner when made with the create node
button
All problem 3 jsons checked, modified 7th one for no image, added quiz 1 json
added fix for 2517
Merge branch 'master' of https://github.com/bvds/LaitsV3
Taking care of some non ASCII characters to render properly
Slides for problem set 2 images and json changes added
Fixing bug in quiz problem where parameter node equation box is editable.
Merge branch 'master' of http://github.com/bvds/LaitsV3
fix for change in order of the logs. another if added while the node closing function is called
Merge branch 'master' into sachin
Fixed a bug with the error text.
Merge branch 'master' of http://github.com/bvds/LaitsV3
PS3 and Lesson learned fornt increased
Merge branch 'master' of https://github.com/bvds/LaitsV3
Fixing error message strings (and logic, for table view).
Merge branch 'master' into jonwetzel