Archive, multitagging, cleanup

Cleaned up the current snippets for consistency and minor problems, added multiple tags to most of them, archived a few.

snippets_archive/JSONToDate.md

@@ -0,0 +1,16 @@
+### JSONToDate
+
+Converts a JSON object to a date.
+
+Use `Date()`, to convert dates in JSON format to readable format (`dd/mm/yyyy`).
+
+```js
+const JSONToDate = arr => {
+  const dt = new Date(parseInt(arr.toString().substr(6)));
+  return `${dt.getDate()}/${dt.getMonth() + 1}/${dt.getFullYear()}`;
+};
+```
+
+```js
+JSONToDate(/Date(1489525200000)/); // "14/3/2017"
+```