Merge pull request #24 from jgsmith/master

Merge in new MITHgrid data import ability
now using manifest with jp2 images
optmized propagation control for zoom event
Merge pull request #25 from raffazizzi/master

Better control of zoom event propagation
src/data.coffee

temporarily exposing union functions
first steps towards performance improvements (only first page loaded)
first steps towards search in sequence component
first steps towards search in sequence component
getting images from server; hiding marquee at deeper zoom levesl
moved code to retrieve annotation for canvas to data
moved code to retrieve annotation for canvas to data
loading canvas annotations one at the time. Using timeout to delay refresh of presentation < this needs to be improved
added small fix to avoid marquees with negative wh
fixed typo
fixed another typo
added support for sequence selection with url fragments (requires jQuery BBQ)
added support for sequence selection with url fragments (requires jQuery BBQ)
added jquery bbq to demo
added jquery bbq
restored full path to manifest