Support Simple Send Transaction on the backend.
Add the currency id on the service.
Use TransactionGenerationController on the Send Page
Make transaction_from always required
Added transaction_from parameter.
Generalize error and success messages
Remove old API endpoint
Add two HEXSPACE vars, as well as transactioN_to field
Send pubkey as requiered field from the frontend
Added transaction_to as required field to the frontend
Add pubkey from client
Fix the send amount to convert the value to satoshis accordingly
Don't check for L characters from python long ints
Fix the root cause of long integer L getting into the hex
Updated dust value
Added python dependencies
Fixed nextinput validation

properly stop nextinput creation when we correctly match the input
correctly hex encode the tx hash index when its > 10
Merge pull request #22 from achamely/patch-1

Fixed nextinput validation
Revert "Remove old API endpoint" to support BTC sends.

This reverts commit 535fb4db261371c7ad31a0f2f88c1cda324747ce.
Add fee as a required field and pass it to build_transaction. Use old API for btc sends.