[JENKINS-20074] When displaying an uncaught exception, if we are unable to write the content, just do nothing.
[FIXED JENKINS-20191] Add Test button to check proxy connection
fixed typo
Use Common HttpClient instead of URLConnection
[JENKINS-15757] Ignore 'remember me' if disabled in configuration

The previous implementation of 'disable remember me' just removes the
checkbox from the UI. Users still can set the parameter using a web
browser extension, or patch the login page using a Greasemonkey script
and keep using the feature. And just after the feature is enabled, users
still might be able to use it if they loaded the login page early.

This change prevents that by checking the current configuration and, if
'remember me' is disabled, ignoring any headers set.
Better buttons into popups
Removed commented-out style
the trunk is toward 1.540-SNAPSHOT
[JENKINS-17929] Noting that authentication does not work in the groovysh command.
[FIXED JENKINS-20074] Do not report irrelevant exceptions thrown in the process of reporting a (possibly relevant) exception.
Merge branch 'uncaught-socket-exceptions-JENKINS-20074'

Conflicts:
	core/pom.xml
[FIXED JENKINS-20106] Show different "up" link for jobs in folders

This change determines in the current items parent is the Jenkins
instance. If so, behavior is as before. Otherwise, link to parent
and use the label 'Up' instead of 'Back to Dashboard' similar to
Folders Plugin.
Merge branch 'JENKINS-20106' of github.com:daniel-beck/jenkins into daniel-beck-JENKINS-20106
[JENKINS-20106] Noting.
Merge pull request #990 from ssogabe/JENKINS-20191

[FIXED JENKINS-20191] Add Test button to check proxy connection
restored some Spanish messages

these messages were purged in 772bd8f63f7ab45b5235aa02f51e02e781c37c0b
for being unused, but they are actually active.
updated German localization
Should use safeRestart, not immediate restart, when -restart option is given.
Merge branch 'master' of github.com:jenkinsci/jenkins
Updated @since due to backport.
Use RunAction2 to avoid persisting a build field.