* Hid select#sel-saga if there aren't at least 2 sagas.
* Added a hide option to sagas.json to hide certain sagas from the menu. Then used it to hide the Lorem Ipsum saga, which in turn hides the saga menu.
* Added a div#map-menu for symmetry with div#saga-menu
* Floated div#saga-menu to the right which looks better, especially if select#sel-saga is hidden.
* Re-named locations.geo.json to features.geojson