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
Merge branch 'master' into jonwetzel
Added new functions for figuring out if nodes are correct AND match the author's model.
Adjusted lessons learned to use the new correctness check too.
Adding quiz problem two.
slides and images added for quiz 3
extra images added, removing them
width added to learning lesson so that the slide does not increase to much
glucose min model typos bug
code changes for correct URL added, can over ride the code on devel
Merge branch 'master' of github.com:bvds/LaitsV3
Merge branch 'master' into dillanbutler
Bug Fix 2486 and 2530
Merge branch 'master' into avaneesh
Removed redundancy and fixed bug 2416

Fixed bug 2416, multiple scroll bars popping up for different sizes and
also removed the redundancy of render graph and renderable,
rendertable.js is no longer needed
Fixed bug 2536

Fixed typo that made lessons learned button not work