add and style split API buttons to header.
style summary page.
Merge branch 'master' into design/39-split-api-button
fix link to api summary, also fix some minor coding standards issues
convert <a> to <Link>, fix some minor coding standards issues, remove classes for github icon
use logo mark from config, if provided - also fix some minor coding standards issues
refactor and style navigation to include collapsable sections.
Merge branch 'master' into design/41-main-nav-collapsing
Merge branch 'master' into design/39-split-api-button
Merge branch 'master' into design/38-style-summary
fix synopsis padding
fix header naming structure for symantics
refactor and restyle api-summary link and external api link in header
Merge pull request #41 from synapsestudios/design/41-main-nav-collapsing

fix main nav styling and allow for collapsing/expanding the grouped items
Merge pull request #39 from synapsestudios/design/39-split-api-button

Split link for back arrow and api name into two links
Merge pull request #38 from synapsestudios/design/38-style-summary

Fix styling for api summary page and resource synopsis
Merge branch 'master' into design/40-all-methods-collapse