Archive, multitagging, cleanup

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

snippets/sortCharactersInString.md

@@ -2,12 +2,11 @@
 
 Alphabetically sorts the characters in a string.
 
-Split the string using `split('')`, `Array.sort()` utilizing `localeCompare()`, recombine using `join('')`.
+Use the spread operator (`...`), `Array.sort()` and  `String.localeCompare()` to sort the characters in `str`, recombine using `String.join('')`.
 
 ```js
 const sortCharactersInString = str =>
-  str
-    .split('')
+  [...str]
     .sort((a, b) => a.localeCompare(b))
     .join('');
 ```