rewite whole code

add dataApi
renew PreferencesModal

package.json

@@ -52,6 +52,7 @@
     "markdown-it-emoji": "^1.1.1",
     "md5": "^2.0.0",
     "moment": "^2.10.3",
+    "sander": "^0.5.1",
     "season": "^5.3.0",
     "superagent": "^1.2.0",
     "superagent-promise": "^1.0.3"
@@ -66,7 +67,7 @@
     "css-loader": "^0.19.0",
     "devtron": "^1.1.0",
     "electron-packager": "^6.0.0",
-    "electron-prebuilt": "^1.0.2",
+    "electron-prebuilt": "^1.1.3",
     "electron-release": "^2.2.0",
     "grunt": "^0.4.5",
     "grunt-electron-installer": "^1.2.0",