Settle on a name for "Label" vs "InputLabel" for Form components, and add `JSX` as a valid property

[Kyle-Mendes]

Some components use label as the property for assigning a label to the field. Others use inputLabel. We need to settle on a single one and use it across all components.

Further, all labels should allow for JSX as an input, and not just a string, which will allow for more customization for labels (tooltips for example)