add how to annotate gif
moved dismissable gif into the sidebar
styling for how-to-annotate sidebar
Initial IE fixes.  #205
Fixes:
* Replace browserify with uglify
* Replace event shim with a different event shim that doesn't step on events in IE 8
* Use ISO 8601 dates on docs for maximum portability.
* Replace ASP-style Angular tags with properly escaped blade tags.
* Remove require() syntax entirely.
Merge pull request #223 from opengovfoundation/issue137

Issue137
Merged.