Removed skip nav links from splash and server message pages to prevent Basic HTML version link from loading, as per issue #1252. Also corrected showing of navcurrent in the secondary menu in mobile view.
Mixins: Add Golden Ratio function

Requested in #1222
Merge pull request #1267 from nschonni/add-golden-ratio-mixin

Mixins: Add Golden Ratio function
Resolved merge conflict
Merge branch 'v3.0'