Add tests for URI-Rs with query strings

[machawk1]

In #287 @ibnesayeed highlighted that the query string was stripped from a URI-R due to Flask's handling of "paths" in the server hooks.

A test ought to be written for this. Such a test would include a WARC with a URI-R containing a querying string parameter.

We cannot validate this by looking at the TimeMap in the test, as the QS will likely be canonicalized off.

@ibnesayeed Do you have a suggestion on how we can test the currently implemented functions to ensure they are handling the parameters as expected?

[ibnesayeed]

You can use Flask's testing framework to avoid many things you are doing using urllib and other packages like that.