Rename main.min.js to main.js

[TheMaaarc]

Instead of changing the main.js to main.min.js in the admin module (see luyadev/luya-module-admin#48), change the main.min.js to main.js in the cms module.

Reason is that it makes more sense to not tell the "state" of the code at all rather than implying that the file is minified when it actually isn't. (CMS is minified but ADMIN isn't because of angular complications)