[JENKINS-20892] Noting that RunList.getFirstBuild (used by BuildTimelineWidget) breaks lazy loading.
(cherry picked from commit a586609c4a2f2083a7f40a6055776afbf2b1f1c7)
[JENKINS-20892] /user/*/rssLatest should use getAllItems to check in folders, just like /user/*/builds does.
(cherry picked from commit ece93739dd291d03c673664afe6b4aaa00f07ef1)
[JENKINS-20892] Introduced method so that /user/*/rssLatest can check UserIdCause just like /user/*/builds already was.
(cherry picked from commit 76af02eed23f43ebd7fde094d939339705b1ef0f)
[JENKINS-20892] Partial fix of poor scalability in /builds and related displays.
(cherry picked from commit c5e23739fa85a6fe93ad90a35da4051a2767c874)