Updates link colors.

Adds default styles for various pseudo classes for links. Fixes #176.

Changes link colors in header and footer to make them more readable. Refs
Updates color and font size of user meta.

Helps make this a bit more readable. Also adds a pipe to better separate the
username/email from the log out link.
myPrisms page markup love.

Fixes problematic markup on myPrisms page. Also tries to make indenting more
uniform, to make it easier to read and debug.
Checks if myPrisms page has data to display.

Prints message if there are no prisms to display.