Moved CustomDateEditorRegistrar out from default package into
com.joergrech.kickstartwithbootstrap.

Removed src/resources
Moved dependency injection of customPropertyEditorRegistrar into
KickstartWithBootstrapGrailsPlugin.
Removed deprecated ApplicationHolder from some files.
Rework getting messageSource in TagLib to not use deprecated
ApplicationHolder
change packages to be consistent with best practices.
Move to lesscss-resource 1.3.3.
Removing explicit dependency on less-css as lesscss-resources plugin has
been upgraded to use less-css 1.3.3