Remove passing "all other" props to DOM nodes

[donnieberg]

This shouldn't change any functionality so if anyone sees anything, please let me know. I went through all the components and remove the {...props} from the DOM nodes (buttons, inputs, svg, etc).

I tried to think of all the common event handlers, attributes, and a11y stuff that might be passed down to these elements and added them manually. Please let me know what I've missed.
(Just an FYI for @tweettypography @chriscorwin @futuremint @iowillhoit)

In general, I wanted to ensure these props are passed down to <button>s (not inclusive list):

		const {
			ariaExpanded,
			ariaHaspopup,
			disabled,
			id,
			onBlur,
			onFocus,
			onKeyDown,
			onKeyPress,
			onKeyUp,
			onMouseEnter,
			onMouseLeave,
			tabIndex
		} = this.props;

And these props are passed down to form elements (input, checkbox - again, not all inclusive list):

const {
	ariaActivedescendant,
	ariaAutocomplete,
	ariaControls,
	ariaDescribedby,
	ariaExpanded,
	ariaOwns,
	ariaRequired,
	assistiveText,
	disabled,
	label,
	onBlur,
	onChange,
	onClick,
	onFocus,
	onInput,
	onInvalid,
	onKeyDown,
	onKeyPress,
	onKeyUp,
	onSelect,
	onSubmit,
        minLength,
	maxLength,
	name,
	placeholder,
	readOnly,
	required,
	role,
	type,
	value
} = this.props;

This PR also addresses:
Checkbox not responding to keyboard as it should - #753
Unknown props in stateful buttons - #417

[donnieberg]

The <input /> is the real area to focus on in this component ^

[interactivellama]

This is parsed as markdown. Please change to "-1"

[minevskiy]

Will SLDSButton prevent onMouseDown default? If not and it will bubble, I would add onMouseDown to the list.

[interactivellama]

Thanks for working on this tedious task. A few minor comments. I'll probably bump this up to 0.5.0 at release, since I'm 100% sure some of our engineers have hacked these attributes.

[interactivellama]

This probably needs // eslint-disable-line no-unused-vars.

[interactivellama]

"-1"

[donnieberg]

@minevskiy good call -- I added onMouseDown to the button and stateful button.