Syntax highlighting of DevelopmentTodo

TODO items for Spamikaze developers.  After the first entry has been completed, the others should be easier to do.

 * abstract out database operations for 0.2 database layout, as a separate module loaded from Spamikaze.pm
 * add another module with the new database operations (see DatabaseDesign), for both MySQL and Postgresql
 * integrate the DNS query counting modules
 * implement the spamtrap/non-spamtrap ratio finding code (see FalsePositives)