Differentiate symbol for flipping and rotating DFC Battles

[NerdyNathan]

Currently, the mouse-over symbol for rotating a Battle 90 degrees is two arrows in a circle, and the symbol for flipping to see the back of a DFC Battle are slightly squished two arrows in a circle.

Maybe something that resembles the Tap symbol for rotation?

[Senryoku]

True, especially now with battles that can have both symbols, using two different symbols would be better.

Fontawesome has these two if we want to keep it consistent:

But using the tap symbol would be flavorful. Maybe we could also update the flip symbol to try to have both the flavor and the consistency.

[NerdyNathan]

Nice, I can work on this after I finish up #430 in the next day or two, if you like.

[Senryoku]

I changed it to use the font awesome icons in 5777f43 (and very slightly tweaked the flip icon)
From

To

I might experiment with something closer to a tap icon, unless you want to do it!

[Senryoku]

Experimenting with a tap symbol (#454):

[Senryoku]

93b2c7c