0.26.0-rc.2

• Changes all instances of "students" in the text to "learners"
• To aid in accessibility, a skip link was added to all pages that allows the user to skip past the header and navigation to the main content of the page.
• Standardize all page names used for tracking events.
• Add new click tracking events to all navigation menu links.
• Fix a bug that was leaving strings in Insights untranslated.
• Upgrade Bower to version 1.7.8 to fix an error that occurs during Travis builds.
• Restore tooltip on map view.