Delete that annoying hubcap.json

Signed-off-by: Constantin Runge <uroc327@cssbook.de>
add a hubcap.json similar file to show branch linkage for developement branch

May generate this branch with git-utils, so tags, branches and all the stuff is set,
when you create or checkout a branch (so feature branches have their own dl branches e.g.)

Signed-off-by: Constantin Runge <uroc327@cssbook.de>