Transactions counter in navbar. Moved updateTx from controller to service.
Alert for transaction support in navbar (red label).
Fixes Sign and Reject Transactions.

Known bugs:
	* After 5 continuous transactions, connection is lost with peers
	* 1-of-1 wallet does not refresh automatically
fixes recommended by Matias
Fixed autorefresh transactions proposal with a 1-1 wallet
Merge pull request #361 from cmgustavo/feature/txs-alerts

Feature/txs alerts