add x-gif component
remove unnecessary files
add thumbnail.gif
add setSource listern and src attribute for ceci-definition
add method setSource
Image brick updates
Audio Clip brick updates
Audio component updates
Updated thumbnail and removed accidental css file addition.
fixes #2123 properly display first card after a publish
Playback rate is a listener also, and persists when changing audio source.
Font family updates
Continued font updates, swathing to Open Sans (via Google)
Merge pull request #2288 from flukeout/audioupdates

Audio Brick updates
Merge pull request #2285 from flukeout/imagefixestwo

Image brick updates
Bunch of font style updates and using Google Fonts for Open Sans now
Minor style update to the right column.
fixes #2286 fixed leaking vars handlerType and headingText
Merge pull request #2290 from ScottDowne/t2123

fixes #2136 properly display first card after a publish
leaking url variable