BUG-731: do not throw Exceptions

This patch updates the configuration bindings to declare concrete
exceptions as thrown.

Furthermore it removes the ability for a LocRIBListener to throw checked
exceptoins: implementations are expected to handle them from now on.

Change-Id: Iaf4785075ea901af5cd9d9a9ad5e9954526e9a93
Signed-off-by: Robert Varga <rovarga@cisco.com>