SWF-2988 : Create addon-container branch and update projects versions
PLF-5980 Using Addon container to display portlets
COMMONS-344 [UserStateService] ping REST service returns 403 error in public mode
PLF-5980 add css and all other AddonContainers:
 - TopNavigationContainer
 - LeftNavigationContainer
 - TopRightGadgetContainer
 - BottomRightGadgetContainer
 - BottomWikiContainer
 - BottomDocumentContainer
 - BottomSocialContainer
 - TopSocialContainer
 - TopLeftNavigationContainer
 - TopRightNavigationContainer
 - BottomAllContainer
PLF-4469 : Import ExtendedPropertyConfigurator class from platform-cloud (https://github.com/exoplatform/platform-cloud/blob/master/services/src/main/java/com/exoplatform/platform/container/ExtendedPropertyConfigurator.java) to allow to load additional configuration files (configuration.properties with default properties and exo.properties with user settings)
PLF-4469 : Customize ExtendedPropertyConfigurator to not let ContainerUtil.loadProperties display an error in logs if the file isn't found (${gatein.conf.dir}/exo.properties won't be provided by default)
PLF-4469 : Load user configuration from ${gatein.conf.dir}/exo.properties if it exists
PLF-4469 : configuration.properties must be loaded from classpath (platform-extension-config-VERSION.jar) to get default settings
PLF-4469 : jbosscache and jgroups configurations must be loaded from classpath (platform-extension-config-VERSION.jar)
PLF-4469 : remove useless configuration.properties entries about logs
PLF-4469 : remove useless comment in configuration.properties
PLF-4469 : Cleanup configuration.properties and allow everywhere it is possible to define properties from system properties
PLF-4469 : exo-sample.properties is provided to users to easily create an exo.properties file to override values defined in configuration.properties
PLF-4469 : Useless comment. It is only an internal file now
PLF-4469 : (EXT_PLAT_CONF_09) Add new properties and define default values of existing ones from cluster/jgroups/jbosscache in configuration.properties
PLF-4469 : Reorganize properties files and add cluster config in exo-sample.properties
PLF-4469 : Reformat config files
PLF-4469 : Rename cache.cluster.* properties to exo.cache.cluster.* to be coherent with the Simplified Cluster config spec
PLF-4469 : Rename jgroups.protocol -> exo.cluster.transport
PLF-4469 : Use only our ExtendedPropertyConfiguration to load the exo.properties and the configuration.properties. Everything in configuration.properties using ${prop:default} as value can be override in exo.properties