Search as specified in specs

This PR changes the search view to correspond to the search as [defined in the specs](https://github.com/geoadmin/service-sphinxsearch/wiki/Search-Requirements)

- It removes unneeded stuff, mainly combinations of bbox/searchtext/features that are not needed.

Added a new type: `features`. Types now do the following:

# Note
This changes the sphinx search from `localhost` to `10.239.126.185`, which is our sphinx search test machine. [See this PR to see how the indices were created](https://github.com/geoadmin/service-sphinxsearch/pull/1/)

# locations
Combines swisssearch and feature search. Swisssearch uses searchtext only (no bounding box) and feature search uses searchtext and bounding box (quadindex). Results are combined

# features
Searches for all features in given bounding box. Does not require a searchText

# layers
As before