Merge params from inheriting Survey views so functionality can be reused.

Add more flexibility to the Survey helper for use with the new Survey types. This includes using the new SurveyLogic methods from an earlier commit. And passing on the Logic from the view where necessary.

Added getRecordLogic method to SurveyLogic. This is used to retrieve the SurveyRecordLogic that belongs to a certain SurveyLogic.

Removed setting of the scope in the ProjectSurvey init. This is because it is not possible to query for another entity outside your entity group in the __init__ fucntion.