* Removed a class that is no more required

* Backport from trunk
* As the Valve is re-playing the request, some fields have to be reset before replay, Otherwise the request is in an incorrect state
* Apply fix for both Tomcat 6 and 7
* Added TestCase for webapps with welcome files
* Fix the NPE when Tomcat6 is used
* Att: Do not fix NPE for Tomcat 7

* Backport from trunk
* Partial fix (ending slash missing)
* Accessing a versioned context without the final slash does not return an error 404.
* Added a test for the same.

Add index.html files to the versioning tests so that we can test whether accessing the context with the final slash (for example, /test-versioning without the final slash not any /test.jsp or anything) works

* Upgrade JAXB plugin to a new one that is available in central
* J2EEServer MBean now returns a more complete list of deployed artifacts (not only Java ee modules + plans)
* DataSourceDeployer.isDeployed() was badly implemented, replaced deployeddatasources Map's keys with an URI (equals works on URI, not on DataSourceDeployable)

#697 : Add transaction chapter

If a Deployment plan fragment fails, it should continue to deploy the other deployables

Allows to put an exploded .war in deploy/ folder and thus this archive won't be again copied to work/ directory

#674

fix artifact dependency  #674

#674