ADD: form slider view helper
ADD: wrap slider elements to make them styleable
ADD: Category Repository
Merge branch 'develop' of gitlab.pluspunkthosting.de:pt/pt_extbase into develop

* 'develop' of gitlab.pluspunkthosting.de:pt/pt_extbase:
  ADD: wrap slider elements to make them styleable
  ADD: form slider view helper
  TASK: Raise Version