style: notification type icon size

[afonsojramos]

Notification type icon was a bit too big from the information architecture perspective, so I reduced it to the size of the rest of the icons.

Before

After

Note: After includes fixes from other PRs.

[setchy]

I kinda liked that the notification type icon was larger 😄

[bmulholland]

Thanks for thinking about -- and acting on! -- the information hierarchy!

[afonsojramos]

Thanks for thinking about -- and acting on! -- the information hierarchy!

I live with a designer 👀, so I always try to squeeze more opinions about Gitify out of her! 🎨