Remove h3 from nav in Data API
Start of data-api changes
Style changes to subtopic_anchor, h2 and h3
Add methods list to each high-level object
Doc API Navigation changes
Change to OnePageNav script

When inside a section, it should still scroll to top of the section if the nav
link gets clicked.
Style for current link in nav
Merge pull request #28 from wistia/jv-new-api-nav

Update Data-API Nav