Action cursor

[pete-the-pete]

This adds a selector to highlight actionable areas by showing the pointer cursor for elements with the data-ember-action attribute.

This should probably be temporary, to help show where more specific classes could be added.

Without the class

With the class

cc @HospitalRun/core-maintainers

[pete-the-pete]

I can/will handle the conflicts and merge the branch if accepted.

[jglovier]

@pete-the-pete thanks! 🎉

[jglovier]

I just realized using the attribute selector with data-ember-action results in lots of other elements besides the index rows matching the cursor declaration, including elements that aren't actually clickable. I've got a banch open for some cleanup, so I'll add a classname to the rows and target based on the class.