Extended the ButtonFormType to allow the usage of icons in buttons
support of collections without rendering of controls-div
correction of an inline comment
added check for .controls-div in collection-add function
Add translation support for widget_prefix and widget_suffix.
Merge pull request #489 from shadypierre/patch-1

Add translation support for widget_prefix and widget_suffix.
Merge pull request #487 from Mercoline/buttontypeextension-icons

Added ButtonFormType to allow the usage of icons in buttons
Merge pull request #488 from naitsirch/collection_without_controls

Support add-buttons of collections without a ".controls"-div