Created 2 commands; changed controlstring to classwide var; changed help-page

Created follow -> Let the bot follow you.
Created unfollow -> Disables following.
Created stick -> Stick the bot to your current channel.
Created unstick -> Disables sticking.

Controlstring is now @Controlstring so it can be accessed by the
commands.

"Channel control" has been added to the help-page
Merge pull request #1 from Splinti/master

Created 2 commands; changed controlstring to classwide var; changed help...