add common functions for webpages
add Autoloader
add Dependency Injection tool
add DISpecialHandler interface for handling special cases of DI
add Config class
add Timestamp
add getallheaders(), config_merge() and h() functions
add Request, Url classes
add Request wrapper class
add SQL statement interface and NativeSQL implementation
add DbDialect interface and DbException
add Database class, with separate DbEngine class and DbResultSet interface
add SQL statement builders
add DatabaseDIHandler for creating Database instances by DI
add MySQL database implementation classes
add utility classes
add Struts-like Action- and Forward-system
add RequestHandler for Struts-like behaviour
delegating to ApplicationHandler
use authentication service in RequestHandler