transition to Neon

* resource map uses Neon update site
* removed KIELER and layout features from Buckminster cspec (cannot be
installed into Neon)
* removed kieler and layout feature projects
* upgraded BREE to Java 1.8 where necessary
* eTrice-rt launch config with Java 1.8
* updated JUnit launch configs to Java 1.8

Change-Id: I35f8ac2819480dec7f5fe739ed2445af137a445f