remove unused Sass variables from _base.scss
fix broken profile pic image source link
update to RequireJS 2.1.6
changes to grunt/cssSource/_globalStyles.scss (see message)

Sass function now defines rollover color for mobile nav links, hovers and visited states. temporaroly commented out code for testing new color palettes.
temporarily commented out link code in grunt/cssSource/_desktopStyles.scss
updated footer bg image
temporarily commented out link code in grunt/cssSource/_base.scss
push both production and development copies of styles.css to GitHub