A recent Stapler update caused the Jelly facet to ignore *.xml.
So need to use raw j:include (as plugins were doing), not st:include (as core did).

Most notable, cvs 1.6 → 2.8, to get the critical fix of removing the mail address resolver.

(cherry picked from commit 9858bf1e)

This is deemed important because we ship Jenkins without security setting by default.

For multiple line warning messages, this makes them little bit spaced, but I think it's OK.

Plus more simplifications

Using prototype.js to simplify the code

On Chrome (and possibly others), an inline element like span doesn't enlarge
its size to cover its content, so the 1px place holder wasn't taking effect.

To ensure the minimum height of 16px, make it an inline-block element. I'm
not entirely sure how an inline-block element with no fixed width would behave,
but with a bit of casual testing, the text inside seems to wrap OK.

- Improved logging and recovery for the Record thread that dies in the middle.
- Recover from failing to monitor one node and move on to the next.

This allows administrator to remove this problematic file.

For example, a new job might have a trigger setting to begin with,
or it might resolve a reference that was previously failing (for
example, 'up' job referring to 'down' job and the 'down' job is newly
created.)