This patch makes the following changes:

• Show edges when in wire or x-ray modes (was default in 2.7x), making edges not fade into the background.

• Use the same edge/face selection colors as 2.7x.
  
  Changes for 2.8x make the faces more yellow and the edges more red.
  
  This makes it hard to see highlighted edges and faces at the same time since yellow is a brighter color.
  
  This commit just changes the edge & face hue back to what they were in 2.7x (keeping the alpha as-is).

Before	After

Before	After

This is the difference in solid mode, unlike the issues above, this is just included for reference, both before/after have a visible selection.

This looses the ability not to highlight edges in wire-frame mode, if this is important to keep we could have an edge highlight option that only applies in wireframe mode, (anecdotally I rarely saw users disable this option), so I don't think it's all that important. Users will let us know if they want this back.