Changes from 4.2.0rc2 to 4.2.0

*Kernel:
- Implemented enhancement #15575 (Refactor Version History Limit handling)
- Implemented enhancement #15574 (Throw a warning when VersionLimit < 2)

*Design:

*eZTemplate:

*eZLocale:

*Package system:

*Scripts:

*Translations:

*Bugfixes:
- Fixed bug #15561: eZContentObjectTreeNode::fetch() SQL error when conditions argument is given
- Fixed bug #15579: VersionManagement.VersionHistoryClass doesn't work