fix account indexes, add base path in settings

src/js/services/derivationPathHelper.js

@@ -0,0 +1,46 @@
+'use strict';
+
+angular.module('copayApp.services').factory('derivationPathHelper', function(lodash) {
+  var root = {};
+
+  root.default = "m/44'/0'/0'"
+  root.parse = function(str) {
+    var arr = str.split('/');
+
+    var ret = {};
+
+    if (arr[0] != 'm')
+      return false;
+
+    switch (arr[1]) {
+      case "44'":
+        ret.derivationStrategy = 'BIP44';
+        break;
+      case "48'":
+        ret.derivationStrategy = 'BIP48';
+        break;
+      default:
+        return false;
+    };
+
+    switch (arr[2]) {
+      case "0'":
+        ret.networkName = 'livenet';
+        break;
+      case "1'":
+        ret.networkName = 'testnet';
+        break;
+      default:
+        return false;
+    };
+
+    var match = arr[3].match(/(\d+)'/);
+    if (!match)
+      return false;
+    ret.account = + match[1]
+
+    return ret;
+  };
+
+  return root;
+});