Your assignment is to make a blog.  This will have three web
pages.

Input Page
* Asks for a title (textfield), text (text area), and a mood (radio buttons).
* Sticks the data into the database.
* Checks that all three pieces are filled in.
* Puts in the current date and time.
* Has a link to read the blog entries.
* Has a link to clear the database.

Reading Page
* Shows blog entries in chronological sorted order.
* Can show most-recent-first or least-recent-first
   depending on a variable in the URL.
* Has a link on each blog entry that deletes that blog entry.

Clear it Page
* Wipes out everything, makes new tables.


Other Stuff
* Escapes things put in the mysql database.
* Escapes things printed to the web server.


Code will be reviewed on Sept 26.  THIS MEANS YOU!

All common code should go into a common file.  
'require' this file.