Updated wsdl2php with multiple features

- Added server side generation
- Added ability to turn off documentation
- Added verbosity
- Improved documentation
	+ Added documentation for types
	+ Added documentation for members
	+ Only print out documentation if it exists
- Improved extensions
	+ Made sure if a class is extending another class, that it is generated beneath its parent class
	+ Made sure we aren't overwriting parent variables unnecessarily 
- Determines if some types are unused, and excludes them by default
- <import> lines in WSDLs are now supported
- Type's substitutionGroup attribute are now supported
- Made generated code more uniform
- Cleaned/Optimized the code