[#257][xs]: s/countries/places/.
[#265][s]: remove a bunch of read-only of index-specific pages.

* Also contributors page (people can put in about page by hand)
[#268,refactor][s]: move overview page to home page - fixes #268.
[#269,refactor][m]: refactor layout templates for place and dataset.

* Share common code effectively and clearly (essentially merge overview-table-bycountry-row.html overview-table-bydataset-row.html)
* refactor dataset route in several ways
  * to use getEntrys (removing need for byDataset stuff in lib/util.js)
  * to use dataset and place objects
[#268][xs]: redirect old /country to / rather than overview.