fix(contracts): replace $accounts for onDeploy too

This was intended from the start, but was only done for args

lib/modules/deployment/contract_deployer.js

@@ -15,7 +15,7 @@ class ContractDeployer {
   }
 
   // TODO: determining the arguments could also be in a module since it's not
-  // part of ta 'normal' contract deployment
+  // part of a 'normal' contract deployment
   determineArguments(suppliedArgs, contract, accounts, callback) {
     const self = this;
 

lib/modules/specialconfigs/index.js

@@ -37,9 +37,23 @@ class SpecialConfigs {
   replaceWithAddresses(cmd, cb) {
     const self = this;
 
-    let regex = /\$\w+/g;
-    stringReplaceAsync.seq(cmd, regex, (match) => {
+    let regex = /\$\w+\[?\d?\]?/g;
+    stringReplaceAsync.seq(cmd, regex, (match, index) => {
       return (new Promise((resolve, reject) => {
+        if (match.startsWith('$accounts')) {
+          let accountIndex = cmd.substring(index + 10, index + 12);
+          accountIndex = parseInt(accountIndex, 10);
+          return self.events.request('blockchain:getAccounts', (err, accounts) => {
+            if (err) {
+              return reject('Error getting accounts: ' + err.message || err);
+            }
+            if (!accounts[accountIndex]) {
+              return reject(__('No corresponding account at index %d', accountIndex));
+            }
+            resolve(accounts[accountIndex]);
+          });
+        }
+
         let referedContractName = match.slice(1);
         self.events.request('contracts:contract', referedContractName, (referedContract) => {
           if (!referedContract) {