Adding sitemap module
Adding a route for sitemap.xml.
Refactoring and corrections about language support.
Updating language files.
French update
Merge pull request #11 from dev-ggallon/French_Language

French update
A language correction, Bulgarian only.
Upgrading CodeIgniter.
Adding language files for French, not translated.
Insignificant changes.
Upgrading CodeIgniter.
Upgrading CKEditor, 4.3.1 -> 4.3.3.
Specifying paddings inside the online editor.