Fix confirm unicity
in djwebdapp.provider.index, we pass the level. Since we index from the earliest caller level which we pass explicitly, we can end up indexing twice the same tx (hash-counter-nonce triplet) on different levels.
in djwebdapp.provider.index, we pass the level. Since we index from the earliest caller level which we pass explicitly, we can end up indexing twice the same tx (hash-counter-nonce triplet) on different levels.