added initial login handler class. I have a fair idea on how to get this started. I also added the first sql file in the dbsql.
implemented a login redirect if someone tries to go to the trade section. Later on this can be changed so that certain parts of the "/trade" tab will only be available if you are logged in and the chart data will be available to anyone. The logout handler needs to be fixed. And there has to be a part that shows who is logged in and a button to logout.
Merge pull request #32 from walter-cavinaw/walter

adding db and auth changes