Beginnings of use of the LogPanelPreferenceModel.
Beginnings of use of the LogPanelPreferenceModel.

Timestamp column format can now be customized
by right clickings on the Timestamp column header
and choosing a different format. Right now there is
only "Simple time" as an alternative to the ISO8601
formatter.  Eventually other simple formats, plus
a custom format editor will be provided.

At the moment, this preference model is not persisted
between sessions.

WIP.


git-svn-id: a7be136288eb2cd985a15786d66ec039c800a993@310113 13f79535-47bb-0310-9956-ffa450edef68

prmsheriff/log4j,MuShiiii/log4j,prmsheriff/log4j,sreekanthpulagam/log4j,MuShiiii/log4j,prmsheriff/log4j,MuShiiii/log4j,qos-ch/reload4j,qos-ch/reload4j,prmsheriff/log4j,sreekanthpulagam/log4j,qos-ch/reload4j,smathieu/librarian_sample_repo_java,smathieu/librarian_sample_repo_java,MuShiiii/log4j,sreekanthpulagam/log4j,sreekanthpulagam/log4j,MuShiiii/log4j,sreekanthpulagam/log4j,prmsheriff/log4j