refactoring window initialisation
merge
adding window to slot
added slot module
font-awesome
merge toc-interaction
added dependencies
merged toc-interaction
fixed Gruntfile
css changes
registering slot state
basic functionality of slots populating from the manifest panel complete.
minor css changes.
merged from master. Added slots integration. closes #114.
Merge pull request #152 from IIIF/slots-update

Slots update