Add base64 upload support

server/package.json

@@ -23,8 +23,10 @@
     "app-root-path": "^2.0.1",
     "autobind-decorator": "^2.1.0",
     "aws-sdk": "^2.98.0",
+    "b64": "^4.0.0",
     "body-parser": "^1.17.1",
     "canvas": "^1.6.7",
+    "clui": "^0.3.6",
     "config": "^1.25.1",
     "cors": "^2.8.3",
     "credential": "^2.0.0",
@@ -37,6 +39,7 @@
     "mongodb": "^2.2.35",
     "mongoose": "^5.0.13",
     "mongoose-merge-plugin": "0.0.5",
+    "node-fetch": "^2.1.2",
     "nodemailer": "^4.0.1",
     "passport": "^0.3.2",
     "passport-http-bearer": "^1.0.1",
@@ -46,7 +49,9 @@
     "redis": "^2.7.1",
     "redis-rstream": "^0.1.3",
     "regexp-pattern": "^1.0.4",
+    "safe-buffer": "^5.1.1",
     "socket.io": "^2.0.3",
+    "tmp-promise": "^1.0.4",
     "urlsafe-base64": "^1.0.0",
     "uuid": "^3.1.0"
   },