[WIP] Updating to latest ol3 version

This PR updates ol3 to latest master version: https://github.com/openlayers/ol3/commit/7b7070d72334756fcc171347938c52a9ff1dc7e2

It's in preparation for the kml import component, which needs the latest ol3. I will base the kml work on this branch.

1. Proj4Js version needed to be changed to 2.2.x because of https://github.com/openlayers/ol3/pull/1228. Note that **this change resulted in different transformation results than the older version**. This can be seen in the tests, which needed to be adapted.
2. MGRS.js has been removed as proj3js 2.2.x now supports it out of the box.
3. View2D does not exist anymore

Please don't merge yet.