First pass at ripping out UX2 and chatter.  This is most of it.  Odd clean ups from here on out.
More scrubbing out of UX2.
s/old_layout/layout/g
Merge branch 'master' into remove-ux2
Merge branch 'master' into remove-ux2
Merge branch 'master' into remove-ux2
Merge branch 'master' into remove-ux2
Fix e2e base url, as there is no more /pg prefix
Provide long listing of URLs that Protractor can use to do superficial testing.
Get rid of "Switch to UX2 footer"
Merge branch 'remove-ux2'

Conflicts:
	karl/views/static/karl-custom.min.css
	karl/views/static/karl-multifileupload.min.css
	karl/views/static/karl-ui.min.css
	karl/views/static/karl-wikitoc.min.css
	karl/views/static/min/karl-custom.min.js
	karl/views/static/min/karl-multifileupload.min.js
	karl/views/static/min/karl-ui.min.js
	karl/views/static/min/karl-wikitoc.min.js
	karl/views/static/tinymce/min/tinymce-3.5.2.karl.min.js
	karl/views/static/tinymce/min/tinymce-popup-utils.min.js
Merge remove-ux2 and regenerate static assets.