Misc: Update all references to bugs.jquery.com

Fixes jquerygh-1681
Closes jquerygh-1716

Author: arthurvr

CONTRIBUTING.md

@@ -126,7 +126,7 @@ Now open the jQuery test suite in a browser at http://localhost/test. If there i
 Success! You just built and tested jQuery!
 
 
-### Fix a bug from a ticket filed at bugs.jquery.com:
+### Fix a bug from a ticket filed on Github:
 
 **NEVER write your patches to the master branch** - it gets messy (I say this from experience!)
 

package.json

@@ -20,7 +20,7 @@
     "library"
   ],
   "bugs": {
-    "url": "http://bugs.jquery.com"
+    "url": "https://github.com/jquery/jquery/issues"
   },
   "licenses": [
     {