Some more changes

-Added SQL querying functionality to all filters (for right now the
database connectivity stuff is commented out until we have some example
data and a connection string). Probably still needs improvement but so
far it generates simple, valid SQL SELECT statements using SQL Parameter
objects to sanitize the input values.
-Cleaned up tons of the useless debug build files and stuff that we kept
committing.
-Possibly some other minor changes but nothing else really of note.