Added vertical work images with img-responsive

With this solution the images reach their maximum size for larger
viewports, thus leaving large margins on the sides. On narrow viewports
the images extend to the width of the container.

Scaled QA poster using Lanczos interpolation since it slightly reduces
the errors around the text.

Increased the minimum viewport width required for viewing images with
Magnific since the images are wider in this layout and even more space
is required for viewing the text of the posters.
Removed scaled QA poster and added full size image

Serving the full sized image with reduced dimensions and using the
img-responsive class results in a much clearer image compared to scaling
the image even with Lanczos interpolation
Increased font size, line height, and whitespace

Moved paragraph styles for font size and line height to common style
sheet

Increased whitespace around paragraphs, articles, and images

Placed margin style for images in common style sheet which allowed
removal of the about page style sheet
Floated prof-pic in xs viewport to reduce margins

When centering the profile picture for extra small viewports there are
large margins on the sides. This situation is avoided by floating the
image inline with the text.
Fixed dead links
Made footer height same as navbar, 50px
Updated news and about page text for resp. design