removal of header gradient background for mobile.
header big 5 spacing fix.
Merge branch 'Joanna-Branch' into oswald

Conflicts:
	.sass-cache/4d7ce8779db04391a5fa26b141658376c4c853b6/_header.scssc
	.sass-cache/4d7ce8779db04391a5fa26b141658376c4c853b6/_mobile.scssc
	css/screen.css
	sass/_mobile.scss