Another fix for #15

Add multiple = true
Add jQuery Knob form type
CS fixes for all types
More CS fixes
Fix selector
Added default_time to datetime picker
Added Dutch translation
Update overview.md
Update overview.md
Update overview.md
Fix deletable to deleteable
add Elastic Textarea Type
remove useless licence backup files
fix elastic textarea doc + add missing link from index doc to elastic textarea type doc
Add Portuguese translation.
Update Portuguese translation for bootstrap-datepicker.
Allow boolean and null value for nameable_field option
Fix custom date format on DateTimePicker.
Added missing default options on DateTimePickerType.
Add default option 'calendarWeeks' on DateTimePickerType.