Manually included the three changes (with code corrections) from pull request #1257.
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'
Reduced heading bottom margins to 0.25em (#1222). Also pe.resize is no longer called for old IE in the pe-ap.js dance function since not needed (#974).
Merge branch 'v3.0'
Fixed dance conditional for pe.resize.
Fixed dance conditional for pe.resize.
Merge branch 'v3.0'
Reduced heading bottom margins to 0.25em (#1222). Also pe.resize is no longer called for old IE in the pe-ap.js dance function since not needed (#974).
Fixed dance conditional for pe.resize.
Updated readme and top level pages with v3.1.0-b2 and v3.0.5 release information.
Resolved merge conflict.
Cleanup: Combine IE7 and 8 JS SCSS
Merged sheets, but no real optimization done at this point.
Tagged follow up issue with thte tabbed interface and opacity mixins
Updated working version to v3.1.0-rc1.
Updated to version v3.0.5 for release.
Updated build version to v3.1.0-rc1-working
Updated build version to v3.1.0-rc1-development