Add missing title attributes

Summary:
Extended the linter to check for the title attribute, too, and fixed
all violations. Linter will follow in next diff.

Reviewed By: jknoxville

Differential Revision: D14366410

fbshipit-source-id: b4de3592f2537e2bb16d4c2af231e5bee45346e4

src/plugins/sandbox/package.json

@@ -1,5 +1,6 @@
 {
   "name": "Sandbox",
+  "title": "Sandbox",
   "version": "1.0.0",
   "main": "index.js",
   "license": "MIT",