[UX] Add text labels to icons

[trwnh]

I can't tell what any of the buttons do, aside from guessing.

Some of the icons in the top bar have text on hover, which is at least something, but this doesn't apply to all icons. I am especially confused at what the buttons in the bottom bar do-- what is that triangle, for example? There is no indication of what it could mean, as it is too vague...

Aside from adding hover text, it would also be nice to have a UI option for showing text buttons instead of icon buttons, or icon + text.