General Utility whatsapp bot
==========Commands==========
/help - show this help menu
/tagall - tag everyone
/addlink link - save the resource 'link' (with additional associated 'data')
/showlinks - show all links in the database
/doubt question - ask a doubt
/showdoubt id - shows the doubt with the given id
/alldoubts - show all unanswered doubts
/answer id "your answer" - answer to a doubt of given id
/answered id - mark doubt with id as answered