#648 - When the user change the configuration of jonas-addon-metatadata.xml...

#648 - When the user change the configuration of jonas-addon-metatadata.xml for each addon in $JONAS_BASE/conf/addons/{addon.name}), It should be take into account

* user can now updated the configuration of an addon. $JONAS_BASE/conf/addons is taken into account
* Deployed deployable are not unpacked
* Move "deploying traces" to debug traces