If tx is outgoing, add user to inputs, but address to outputs
Merged Withdraw and Send forms into one SendForm
Added and removed some methods from Transaction, changed Output to filter refunded txs
Added new transaction methods to listview
Removed coin_name regex from overview, changed coin_name to currency_name, changed send to class view
Changed load to receive, eliminated withdraw and send, created class based SendView, changed coin_name to currency_name, removed list_currencies (functionality replaced by overview)
Changed templates to not need to know currency. Changed overview to user real ORM objects instead of view generated dict