Reminder + deactivate plugins

Reminder plugin
Better reminder

You don't have to include hours, minutes AND seconds, but only two or
one of them if you want… E.g 1h5s, 5m, 1h55m
Lots of lots of updates

*Help: How did I use that plugin again?
*Reminder: Never worry about being late again!
*Time: The time is now telling which timezone it's in.
*Bye: Who wouldn't want @bot to say bye?
*Kitteh: I LOVE cats…
*Reverse: How'd that look in reversed order?

Couple o' text updates in the rest of the files
Help for deactivated plugins + New plugin

Ask bot for help for any existing plugin, even though it's not
activated, and bot shall grant you an explanation why what you're
trying to do isn't working
Forgot to update 404 in help.js
Information about @bot
Merged
Merged #2