XCOMMONS-473: Upgrade to Clover 3.1.12
XCOMMONS-460: Upgrade to HttpClient 4.3
XCOMMONS-461: Upgrade to Bean Validation 1.1
XCOMMONS-475: Add helper API to log LogEvent
XCOMMONS-475: Add helper API to log LogEvent
XCOMMONS-476: Add API to search for installed extensions in a specific namespace
Merge remote-tracking branch 'upstream/master'
XWIKI-9543: Activity Stream should ignore some events.

* Renaming TransientEvent to BeginFoldEvent and EndFoldEvent.