Summary:
The GFS weather data url so far was hard coded. With this commit, it is
moved into the global setup (bootstrap file).
Also the url type was changed from QUrl to CUrl, which simplified the
generation of the url including its query by using CUrl::appendQuery().
Finally it fixes sampleweatherdata, which did not have a CApplication yet.
Reviewers: #swift_pilot_client, msutcliffe
Reviewed By: #swift_pilot_client, msutcliffe
Subscribers: jenkins
Tags: #swift_pilot_client
Maniphest Tasks: T151
Differential Revision: https://dev.swift-project.org/D57