Bug 521842 - Move ui.discovery to Java 8

* Bump BREE.
* Bump minor version for the BREE change.
* Enable more warnings.
* Remove redundant type declarations.
* Lambda conversions.

Change-Id: Ic9f5c62021bea9e5a3f42101cd9e82ed70f17718
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
21 files changed