Migrated to Spring 4.0.5.

+ Copied CachingMapDecorator from Spring 3.2 due to deprecation.
+ Changed from CommonsHttpInvokerRequestExecutor to
HttpComponentsHttpInvokerRequestExecutor and lib http-component.
+ Removed all ref's to old Spring enum stuff.
+ Added a TitlePaneConfigurer to make TitlePane LAF more configurable.
Merge branch 'master' of git@github.com:cmadsen/Valkyrie-RCP.git