Sonatype format only - no functional changes
cleanup jetty.xml configuration files

Includes:

- adding InstrumentedSslSelectChannelConnector for ssl example usage
- remove all mentions of org.sonatype.sisu.jetty.custom.DisableTagLibsListener hackery - this taglib junk is no longer triggered in current Jetty
- simplified xml config in many places
- improved jetty-jmx.xml in particular to make it out-of-box usage friendlier
- improved jetty dual ports ssl example - it wasn't really working for me at least and changes reflect a more current best practice to handle enforcing ssl
code formatting only - no funct changes
mentioned preferred port for jmx
minor formatting tweaks
rename to better describe purpose
add kitchen sink example combining https, remote jmx and access logging
reformat only
NEXUS-5960: Kill plx from ithelper plg
tweaks docs
cleanup
fix typo setting handler
Merge remote-tracking branch 'origin/master' into NEXUS-5960-it-helper-kill-plx
NEXUS-5960: hint lost during conversion
Handle the divers possibilities to configure a grid store and columns

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge pull request #172 from sonatype/NEXUS-5960-it-helper-kill-plx

NEXUS-5960: Kill plx from ithelper plg
Merge pull request #175 from sonatype/nexus-5965-jetty-xml-cleanup

REVIEW: NEXUS-5965 - jetty xml cleanup

- generally update for Jetty 8 and simplify config
- remove jetty DefaultHandler as from my debugging it is never called upon or needed anyways
- add InstrumentedSssChannelConnector/doStart support for ssl example
- add InstrumentedHandler around NexusWebappContext to expose metrics
- remove disable taglib hackery and support class
- remove https redirect support class not used and obsolete
- apply sonatype formatting
- fix https redirect examples to use modern security constraint strategy
- rename some example files to better describe purpose ( I think)
- make jmx example work better out of box
- add kitchen-sink example that combines jmx, https enforcement, and access logging all-in-one
Add empty texts to grids

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge remote-tracking branch 'origin/master' into NEXUS-5953-remove-eventbus-managed