Revert "Commit compiled CSS"

This reverts commit ad103a1a99ea9843a0d446ea174efdacf59b5f86.
Add .sass-cache to Git ignore file
Add design fundamentals
Add nav
Make nav mobile friendly
Initial check-in of image assets
Add header photo
Merge branches 'master' and 'master' of github.com:OliverJAsh/gu-developer-hub
Tidy up
Add logo to header
First draft of content for site
Add placeholder content for homepage
Merge branch 'master' of github.com:OliverJAsh/gu-developer-hub
Add affiliates
Add Guardian logo to footer
Fill in empty content on homepage
Commit stylesheets