[JENKINS-9283] Timezone Support for Scheduling

[FIXED JENKINS-17290] -  Corrected sort order of tables

[FIXED JENKINS-28446] - proper calculation of queue length in UnlabeledLoadStatistics

[FIXED JENKINS-28274] Update to the latest versions of maven-jar-plugin and maven-war-plugin.

[FIXED JENKINS-28455] Build History badges don't wrap

Fix ptBR translation

Use ConsistentHash's mass-add method.

Calling hash.add() in a tight loop gets very expensive. With a
good-sized queue & slave pool, this cost tens of seconds, but now it
costs tens of milliseconds.

[FIXED JENKINS-28425] Fix build history styling badness

[JENKINS-28446] - Introduce new API method in Queue to optimize the performance of UnlabeledLoadStatistics

This implementation does not create new methods in API, hence it can be backported.

Just to prevent similar misuses in the future.

[JENKINS-27748] Improve exception management in RunMap#retrieve

---------
It seems that the sort is for sorting ascending order, thus a
"descending" order should be sorter.reverse (+1 squashed commit)
Squashed commits:
[a5eb304] [FIXED JENKINS-17290]

[FIXED JENKINS-28437] - Do not follow href after sending POST via l:task

[FIXED JENKINS-27939] - DefaultJnlpSlaveReceiver should return true when rejecting a takeover.