adds gallery hub template
adds homepage slider scaffold
Merge branch 'staging'

Conflicts:
	app/assets/stylesheets/application/loader.css.scss
	app/views/page/application/_navbar.html.haml
Merge branch 'staging'
adds annotations to slider script
Fixes exception notification
fixes RSS builder and slider js
makes some code cleanups
adds basic slider
Update exif_analyzable.rb
updates slider script