removed 'note element' as form element for questions
edit group: fixed group text from correct subform
ajustments to edit likert group forms

* define for each nodeType the needed subforms and init them
'automatically
* moved getSituations from Properties to QuestionNode.php
* create getSituations in LikertNode (basically te same as for
questionNode)
* adjust questionnaireController: actOnSituation for question/group
* add LikertOptions tab