[FIXED JENKINS-23434] Sort NullSCM first

[FIXED JENKINS-14264] For logs >200Kb, just show two <t:task>s without nesting, for proper interoperability with the context menu.

- Swap out black borders for gray ones

- Add rounded corners to form areas

[FIXED JENKINS-23191] f:radio is not databinding-aware and does not correctly handle multiple configuration sections unless you make it.

[JENKINS-23191] Cannot reproduce problem in HtmlUnit test, but can at least guard against other regressions.

[FIXED JENKINS-23094] Use POST to start slave agent

[FIXED JENKINS-23361] Add CLI commands to add jobs to and remove jobs from views

Plugins like github-oauth-plugin implementing SecurityRealm need to call
these methods in security lifecycle events.

[JENKINS-21631] - Don't fail with NPE if the PeepholePermalink cache contains the non-numeric value.

Actually, the change just prevents symptoms. There should be an error somewhere else.

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>

Integrated the fix made in winp 1.20.

Link to 'Building Jenkins' page from text file

MockFolderTest.moving pointed out a refinement to 1197e0ce: list folders, if included, before their contents.

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>