Redesign: Suspend and Shut Down Buttons Style

[lainsce]

As per the redesign mockup in:

I've styled the shut down and suspend buttons as close as possible.
Looks like:

This is Part 1 of ??? of the Redesign PRs.

[lainsce]

This PR is open for reviews now.

[danirabbit]

I'm not sure this is an improvement. Now users have to scan both horizontally and vertically to see all of the available options

[lainsce]

The universal icons should help with fast scanning. They're faster to target as well.

[danirabbit]

@elementary/ux

[cassidyjames]

I am in the same boat as @danrabbit that I'm unsure if this is easier to scan and use or not with the two actions. If we were wanting to have three or four it might be a better layout, but I'm not really convinced right now.

Also, see inline comments for some small stuff. 😄

[danirabbit]

Something else to consider is if we're still interested in doing something like #45 this design conflicts with our ability to have secondary text here

[lainsce]

We could still have the secondary text, and a selection class done on the shutdown button.
See (rough mockup):

[lainsce]

Closing because the redesign doesn't offer any improvement other than "looks good" which is subjective. It also interferes with new developments.