Made the 'v' icon bigger to increase the hit test area, and improved the alignment
logic so that the text and the 'v' icon gets vertically aligned.

Now that the context menu is open only when clicking 'v', the tooltip on model link should
be displayed as soon as the mouse hovers over it.

I'm not really sure what this code is doing or what ID is supposed to look like. So this is just a minimum-intrusion change to avoid an exception.

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.String.substring(String.java:1875)
        at hudson.tasks.junit.PackageResult.findCorrespondingResult(PackageResult.java:86)
        at hudson.tasks.junit.TestResult.findCorrespondingResult(TestResult.java:295)
        at hudson.tasks.test.AbstractTestResultAction.findCorrespondingResult(AbstractTestResultAction.java:183)
        at hudson.tasks.test.TestResult.getResultInBuild(TestResult.java:162)
        at hudson.tasks.junit.History.getList(History.java:82)
        at hudson.tasks.junit.History$1.createDataSet(History.java:105)
        at hudson.tasks.junit.History$GraphImpl.createGraph(History.java:169)
        at hudson.util.Graph.render(Graph.java:87)
        at hudson.util.Graph.doPng(Graph.java:98)

JENKINS-17416 - Improve Wipe Out Workspace label

Added logging more liberally, and fixed the problem.
The root cause was that when the mouse enters a hot spot, I wasn't cancelling the previous delayed hide timer.

This fix eliminates the need for the hack in the hide method where I was testing if the mouse was still over the hotspot.

Fixed a bug where the context menu anchor 'v' disappears even when the mouse is still over a model link.

This regression appeared to be introduced in 32d5c23f.

d3096819 changed constructor signature. Add a backward-compatible one

ListView can match now items belonging to nested ItemGroups

Tricky to emulate the actual web interaction including JavaScript window.confirm;
suffices to just call the web method directly.

Using l:confirmationLink instead of AbstractItem/delete.jelly and AbstractProject/wipeOutWorkspace.jelly.

Expanded MockFolder to be a ViewGroup so that it is possible to test views inside folders,
and generally fixed it to service Stapler hierarchies properly so that WebClient-based tests can work.

[FIXED JENKINS-5408] Quoting Issue with JDK Installer with Windows Slave