W3c fixes

Final touches on snappy branch. Special care taken of social buttons arrangement in the 'print' version by means of reverting back to good old fashioned css such as empty divs with clear both etc. Added special http header to trigger js and css in the view to be snapped. Adjusted the length to 1480 so as to include all letter buttons on one line and generally finetuned anything that could be adjusted to get the snapshot look as good as possible.