rbutil uses several components from the utils folder, and can be
considered part of utils too. Having it in a separate folder is an
arbitrary split that doesn't help anymore these days, so merge them.
This also allows other utils to easily use libtools.make without the
need to navigate to a different folder.
Change-Id: I3fc2f4de19e3e776553efb5dea5f779dfec0dc21
Handling the data for players from rbutil.ini and the build-info data
from the server is closely related. Splitting things up into different
classes only creates tightly coupling, which is unnecessary, and the
need to differentiate between them in the application.
Merge both classes into a single one and rework handling so the
application doesn't have to deal with two separate classes anymore.
Furthermore, change URL templates to use new values from build-info
instead of hard coding them.
Change-Id: Ica550973ce23d1559110782add52bc214eba552d
