Fixing footer margins

col-md-12 not needed as it causes an extra 15px paddind on both sides unless added inside a div with class row
15px bottom padding added
Removing left and top margins for left-image

Keep margins only on the sides touching the text
Class name changed from 'image' to 'left-image'
Aligning Files and Experiment heading

Class 'row' is only required if adding columns to it.
Separating footer out by adding an hr

Also hr is provided with margin of 15px (standard margin/padding)
Printer icon position fixed

Plus hiding the printer icon on printed page
Removing extra padding for markdown pages

Columns need to wrapped inside class 'row' to offset the padding provided by the container.
Style improvements for Download .tsv button
Overriding bootstrap facet style

Keep the count span with position absolute to force it stay in its position irrespective of the length of the label
Provide extra right padding to the label to make sure it doesn't overflow into the count span
Switched to fluid layout

Changed container to container-fluid
fixed-width-lhs and fixed-width-rhs added to restrict the left column to a max width of 350px for desktop
Width property defined for th.assays

This is to make sure the border of the slanting heading is always aligned with the table column border irrespective to the width of the page
Improved footer logo positioning for small screens

Logos aligned to left, centre and right resp. for screens bigger then 767px, to centre otherwise.