Rename track page to track_example
Relocated the main tracker display files into rails app. Details on wiki.
ol3 files moved to the right place, new index.html.erb made for the ol3 map.
jQuery already available with jquery-rails gem, required in application.js
js require directives moved to application.js; directive syntax fixes; non-vendor testChart.js moved to app; dedicated ol3 folders
Images in rails located at app/assets/images/..., addressed as assets/...
app/assets/javascripts can be organized in any way, so put tracking_home js in their own dir.
Fixed another missing image file.
console output unnecessary.