chore: node => Node.js & remove local for consistency (#2068)

Before:
![screen shot 2019-02-13 at 3 40 19 pm](https://user-images.githubusercontent.com/23313266/52694820-e6373d80-2fa5-11e9-8ef9-6a3b32bd4c32.png)

After:
![screen shot 2019-02-13 at 3 40 26 pm](https://user-images.githubusercontent.com/23313266/52694844-f94a0d80-2fa5-11e9-88b8-6d692f557210.png)

Author: ZYSzys

locale/en/get-involved/node-meetups.md

@@ -1,11 +1,11 @@
 ---
-title: Node Meetups
+title: Node.js Meetups
 layout: contribute.hbs
 ---
 
-# Node Meetups
+# Node.js Meetups
 
-This is a list of node meetups. Please submit a PR if you'd like to add your local group!
+This is a list of Node.js meetups. Please submit a PR if you'd like to add your local group!
 
 ## Code of Conduct
 

locale/en/site.json

@@ -137,7 +137,7 @@
     },
     "node-speakers": {
       "link": "get-involved/node-speakers",
-      "text": "Local Node.js Speakers"
+      "text": "Node.js Speakers"
     }
   },
   "security": {

locale/ko/site.json

@@ -133,7 +133,7 @@
     },
     "node-speakers": {
       "link": "get-involved/node-speakers",
-      "text": "지역 Node.js 강연자"
+      "text": "Node.js 강연자"
     }
   },
   "security": {

locale/zh-cn/site.json

@@ -132,13 +132,13 @@
       "link": "get-involved/node-meetups",
       "text": "Node.js 开发者大会"
     },
-    "node-events": { 
+    "node-events": {
       "link": "get-involved/node-events",
       "text": "Node.js 重大事件"
     },
     "node-speakers": {
       "link": "get-involved/node-speakers",
-      "text": "本地 Node.js 演讲者"
+      "text": "Node.js 演讲者"
     }
   },
   "security": {

locale/zh-tw/site.json

@@ -128,7 +128,7 @@
     },
     "node-speakers": {
       "link": "get-involved/node-speakers",
-      "text": "本地 Node.js 演講者"
+      "text": "Node.js 演講者"
     }
   },
   "security": {