restructured
added SectionBase module
added categories_to_string
move common methods into DiaryBase
change syntax for class method call.
remove duplicate methods
style
remove duplicate accessor
rename filename
restructured TDiaryBase
restructured TDiaryAuthorOnlyBase
restructured TDiaryAdmin
restructured TDiaryView
added autoload of SectionBase
bump version to 3.2.0.20130106