Add import of raw private key RPCs (#2942)

* Importing an account from raw secret

* Add jsapi & jsonrpc for personal_newAccountFromSecret

js/src/jsonrpc/interfaces/personal.js

@@ -141,7 +141,7 @@ export default {
   },
 
   newAccountFromPhrase: {
-    desc: 'Creates a new account from a brainwallet passphrase',
+    desc: 'Creates a new account from a recovery passphrase',
     params: [
       {
         type: String,
@@ -158,6 +158,24 @@ export default {
     }
   },
 
+  newAccountFromSecret: {
+    desc: 'Creates a new account from a private ethstore secret key',
+    params: [
+      {
+        type: Data,
+        desc: 'Secret, 32-byte hex'
+      },
+      {
+        type: String,
+        desc: 'Password'
+      }
+    ],
+    returns: {
+      type: Address,
+      desc: 'The created address'
+    }
+  },
+
   newAccountFromWallet: {
     desc: 'Creates a new account from a JSON import',
     params: [