Settings: Toggles will now toggle when you click their label

[dereksmart]

Fixes #6200

This seems like the most straightforward way to make the settings labels click toggle.

It works, but I feel like there might be something else that we're missing to make this possible. I didn't see any special instructions in dops-components readme or the form-toggle component itself.

To test:

• Click the settings labels with toggles to see the settings toggle.
• Make sure correct setting gets saved.

[eliorivero]

This works fine for ModuleToggle.
Now, there are more than a few places where FormToggle was used instead of ModuleToggle for options that need to take into account more than the module state, for example the toggles for custom post types, the child toggles for infinite scroll and mobile themes, and others.
Maybe the best approach would be to bring in the updates to FormToggle and in that way we can update both ModuleToggle and FormToggle
https://github.com/Automattic/wp-calypso/pull/11158/files

[dereksmart]

replaced. see #6425