adding images to the lr nodes
change all views to use pdfjs instead of GoogleDocs
adding field access to hide common license field and rubric tags field
Adding Grunt/Compass related config files to the repo
Merge branch 'feature/dev-amplify/field-access-common-license-rubric-tags' into dev-amplify
Merge branch 'dev-amplify' into feature/dev-amplify/term-reference-tree-display
fixed up term tree styling and refactored some existing code