add regular account unlocks in devMod due to issues with geth

lib/cmds/blockchain/dev_funds.js

@@ -43,6 +43,11 @@ class DevFunds {
     });
   }
 
+  regularUnlocks() {
+    const self = this;
+    setInterval(function() { self.unlockAccounts(self.password, () => {}) }, 20000);
+  }
+
   connectToNode(cb) {
 
     this.web3.setProvider(new Web3.providers.WebsocketProvider(buildUrl('ws', this.blockchainConfig.wsHost, this.blockchainConfig.wsPort), { headers: { Origin: "http://localhost:8000" } }));
@@ -126,6 +131,7 @@ class DevFunds {
       (next) => {
         console.dir('--- FUNDING THE ACCOUNTS');
         this.regularTxs();
+        this.regularUnlocks();
         this.fundAccounts(this.balance, next);
       }
     ], (err) => {