[JENKINS-16952] [JENKINS-18274] Slave computers should record all log messages at INFO+, not just those in the hudson.* namespace.

Consider the poor Turk who is prompted to log at fıner!

Conflicts:
	pom.xml

- integrated the newer release of remoting
- jar caching won't work with class file directory, so plugin
  WEB-INF/classes are now exploded as WEB-INF/lib/classes.jar
  (This should also solve the problem of slow plugin extraction in the
  presene of Anti-virus software on Windows.)
- because the structure of the exploded jar file has changed, I changed
  the up-to-date check timestamp file name to force re-extraction in
  existing installations.

This came from Alpha CSP guys during JUC Israel. The remote API needs to expose a better way of tracking a submitted task.

This came up with a conversation with JFrog folks who neede to insert a
custom Plexus component to tweak the behaviour.

This scheme allows the caller to insert additional jar files into the
Maven process.

Search bar improvements

Reverting to head for layout.jelly, and adding the default `has-default-text` back into the search box

Taking out the `defaulted` js logic with the search-box, and embracing CSS3's 'placeholder' attribute.
Prettying up the search box

offer better pronouns for common job types

[FIXED JENKINS-17125] FingerprintAction no longer need persist the build field thanks to new RunAction2.