- Remove all Roboto files

Since there is just one font, this setting can be safely ignored. This 
is easier than sanitizing all elements.

#513

#499
- Problem was due to changes in the latest minor material update

#533
- Remove unnecessary and wrong setting of underline property

#531

#532
- Replace the global label identifier

#535

#506

The individual rows are considered as a whole and are therefore
adjustable as a whole via the parent element

#529, #530

- Changes were required due to material update

#528

#454
- does not work in FF

Feature/add keypad to keyboard

- TextAreaElement, TextFieldElement, TextFieldSimpleElement,
  SpellCorrectElement:
  - remove property: softwareKeyboardShowFrench
  - new property: addInputAssistanceToKeyboard

#461

#461

#461
- This property will be used for all input assistance presets
  in the future

#397

#456

- Add Property "hasAutoHeight"
- Add Directive AutoHeight