Merged requested to merge mkudela/schemas_improvements into master
MR related to (#12 (closed))
Purpose of this MR is to optimise condenser API schemas - many schemas are almost the same as database and other API's. Instead of copying and pasting schemas from other API's then changing only small piece of schema, new functions are used. These functions are can rewrite assets from nai form to legacy one (and vice versa), adding and removing selected fields.