WFLY-2468 MappingModuleDefinition is incorrectly constructing the write-attribute handler
WFLY-1469 WFLY-160 add support for runtime reloadable operations

- new model version 2.0
- new parser version 2.0 & xsd
- better runtime operation tests
- all operations are runtime executable now
- update XSD & default confguration
Undertow 1.0.0.Beta25
Disable watch service based file watching for now
Update README to reflect current state
Use virtual file based resource manager to make sure deployment overlays work correctly with Undertow
WFLY-2266 Make deployment overlays feature able to replace application libraries
Temprorary change to work around watch service issue