Is your feature request related to a problem? Please describe...

Lots of BModal props are not globally configurable with the settings. This result in lots of repeating code if, in example, you don't want the modal to be closed on backdrop click in your application.

Describe the solution you'd like

Add the following properties to the BModal Settings:

• centered
• scrollable
• button-size
• no-stacking
• no-fade
• no-close-on-backdrop
• no-close-on-esc
• title-class
• header-class
• modal-class
• dialog-class
• content-class
• body-class
• footer-class
• hide-header
• hide-footer
• hide-header-close
• hide-backdrop
• ok-only
• ok-disabled
• cancel-disabled

Describe alternatives you've considered

Create a custom modal that just call the BModal with the prefered default settings.