Smaller, faster

[battis]

Don't build every object every time for each API request. Just build the object that's being requested. That is, if the request is:

GET https://example.com/stmarks-search/api/v1/3?query=foo%20bar

…then only search domain 3 needs to be instantiated from config.xml.

Presumably this could be done through some sort of thoughtful session management.