LPS-45810 Avoid overwriting configuration when the user has not changed its value
LPS-45810 Wrap low level Settings objects into their higher level counterparts to make use of the fallback keys (which are only defined in the high level Settings classes)
LPS-45810 Remove specific code which is no longer needed
LPS-45810 Adapt ConfigurationActionImpl from DM to the changes in SettingsConfigurationAction that avoid overwriting Settings when the user has not changed them
LPS-45240 PortletConfigImpl returns a PortletResourceBundle with a null parent in legacy plugins
LPS-45240 SF