IMG-586 add check for longdesc. Add links to different sections
Merge remote-tracking branch 'origin/develop' into develop
IMG-643 Add infrastructure for training module
IMG-640 Add decision tree
IMG-640 Logical flow for decision tree.
IMG-646 integrate decision tree quiz with edit book form.
IMG-646 Layout changes to decision tree
IMG-640 Add more imare options. Use backbone.js instead of jquery since we will be converting teh description tool to backbone.js when we get rid of frames.
IMG-645 Add lightbox to view original image
Preload images
Wait for load
IMG-586 check to see if the image has a figure parent with a described-by attribute
IMG-654 add check for figcaptions
IMG-648 Fix polling for status of merge.
IMG-650 Fix decision tree for chrome.
IMG-659 Add intro page content and reduce nav ot pages that will go live.
IMG-659 add page for how to describe
IMG-656 start of how to describe page
IMG-651 remove almost-dupe image
IMG-651 Rename images