Takes a language code eg. php, cpp, html4 and converts it to its description eg. PHP, C++, Html 4 (Strict).
Counts pastes in the database to be used when generating pagination
Creates a paste in the database. This doesn't take any arguments as it's easier to use the input class.
Finds paste that need to be deleted and deletes them.
Controller method to run the cron. Requires a valid cron key supplied as an argument in the url.