React-md: [DataTable] - Disable checkboxes in data-table

[thaithcock]

Currently, the supplied "in-line" checkboxes in data-tables cannot be disabled.

It would be good if we could pass some sort of prop to disable these checkboxes, to prevent user interaction with them.

[mlaursen]

I think I will provide two props:

• disabledRows which will be a list of indexes for rows that should be disabled
• disableAllRows which will be a boolean if all the rows should have the checkbox disabled

[mlaursen]

It might be helpful to also expose disableSelection || disableRow || disableCheckbox? (names hard) on the TableRow itself as well.