Occasionally, Firefox will send the search suggestion
string to the server without a mimetype, resulting in the suggestion
only appearing in Flask's `request.data` field. This field is typically
not used for parsing arguments, as the documentation states:
Contains the incoming request data as string in case it came with a
mimetype Flask does not handle.
This fix captures the bytes object sent to the server and parses it into
a normal query to be used in forming suggestions.
933ce7e068