#17: added Localization classes and basic channel pojo interface.

Task-Url: https://github.com/mgatz/sunrise/issues/issue/17
#19: added joda time library to all projects and added support for
annotated LastModifiedDate.

Task-Url: https://github.com/mgatz/sunrise/issues/issue/19
#18: added interfaces and classes for a default status implementation

Task-Url: https://github.com/mgatz/sunrise/issues/issue/19
#17: added more implementation to channel pojo incl. database ref to
itself for parent channel relation

Task-Url: https://github.com/mgatz/sunrise/issues/issue/17
#17: added manager basics, default html pages for CRUD of channels,
configuration and main css file, updated application config

Task-Url: https://github.com/mgatz/sunrise/issues/issue/17