Typo fixed

Wasn’t pulling in select2.css. Oops.
Merge branch 'css-fixes' of https://github.com/DigitalCurationCentre/DMPonline_v4 into css-fixes
CSS fixes and sign up alert text

CSS - fix the background colour of the website as well as the logos in
the footer
Text - change the alert text  when a user tries to sign in with
institutional credentials.
css fix fro tables layout
Merge pull request #91 from DigitalCurationCentre/css-fixes

Css fixes and change alert text on sign up page