various fixes

* fix CSS issue causing IDs not to display in title area on edit ([#186](https://github.com/Esri/geotrigger-editor/issues/186))
* bump esri-leaflet to v0.0.1-beta.3
* bump geotrigger-js to v0.1.5
* fix highlight issue for list items
* make some routes (list, new, edit) more forgiving with trailing slashes