Added DateTimePicker to the ArticleEdit
add multilingual to the DateTImePicker
Add Date Validation publishDate/archiveDate
Added a Date Validation on publishdate and archivedate
changed the DateFormat
Merge branch 'DateTimePicker' into addDateValidation
Add TestMigration
changed format from the DateTimePicker
some little Changes with the Regexp
update pom.xml to current Version
Changes on the DateFormat
update codestyle
Merge pull request #8 from celements/addDateValidation

Add date validation