Advanced search / query explanation via viewer

[jobspierings]

As a user of the viewer I want to be able to easily see and use additional parameters when searching. E.g. specify:

name
bounding box
type
dataset
other

where feasible with drop down/select/faceted/select bounding box search.

bonus: if this functions as an (implicit) query builder.

see & use suggestions and solutions in #5, #6, #7.