[appserver-io/doppelgaenger] Manually specify advice order

[wick-ed]

Currently the order in which advices get woven is based on the order in which they are defined and referenced. This is not that easy to maintain as e.g. advice chains do rely on a certain order.

UAC:

• There MUST be a way to manually specify an order in which advices get woven
• The resulting order MUST be obvious from the configuration