Add manual input with fractions
Add manual input with fractions

Added new functionality to enter value from keyboard with following changes:
- Add params decimalPoint to determine decimal part length.
- Add parameter buttonsEndInputMode to determine if clicking on +/- ends input mode
- By clicking on input field, stepper enter into "manualInput" mode, and stay in it while user press enter or stepper input lose focus.
- After click input, cursor go to end automaticaly.
- In manualInput mode, stepper checks if input value are correct and modyfies it if necessery.
- manual mode are only available without "readonly" params.

AdrianV/Framework7,nolimits4web/Framework7,nolimits4web/Framework7,nolimits4web/Framework7,iamxiaoma/Framework7,iamxiaoma/Framework7,framework7io/Framework7,framework7io/Framework7,iamxiaoma/Framework7,iamxiaoma/Framework7,AdrianV/Framework7,AdrianV/Framework7