WIP, Updating elasticsearch to v1.n.n #87

there is some really fungly code to replace object fields. Must find some
way to handle that much better and squish this commit ;)
Feed ES requested fields from existing jsonfile #87

Found all the wanted properties in a jsonfile / hashmap, it was quite
easy to use that information to build the list of properites for
fields in the ES query.
Create a LUT at instantiation #87

No need to calculate the field leafs at every elasticsearch query,
creating a LUT at instantiation instead.
Hardcode boost on fields title and identifier #87

should be using availiable boost map later.