First implementation of DAO Factory Pattern

Need to complete override of methods for BugDaoPostgres.java, implement logging, jdbc transactions, and mock dao implementation (for testing).
Implementation of DAO Factory instead of data/Database.java class
fixed model.dao so that the create, edit, & close use cases function
properly.

Still need to address issue of displayAllBugs not refreshing, as well as
syncronize the edit methods.
Fixed update issue that displayAllBugs didn't refresh updates.
Modified listBugs page, logout functionality, header & navigation sidebar

(1) listBugs now uses twitter bootstrap design
(2) now user is able to logout from templates/header.jsp
(3) now user is able to create new bugs from templates/navigation.jsp
implemented authorization filters, renamed package, & removed unneeded js/css

1) implemented filters to prevent unauthorized users from closing or creating bugs.
2) renamed package to com.ambantis.btracker
3) deleted non-minified js & css files.