Allow changing of icon corner for DeProject icons

[hcorion]

Would appreciate the ability to change the corner of the DeProject icons from the left side to the right project-wide. The main reason is because the Perforce icons are also in that same corner, and the DeProject obscures the Perforce icon.

Shown above, the Perforce addition icon is shown underneath the DeProject cog icon for the Physics Material folder.

I would also be happy if it was permanently switched to the right side, or some other approach that doesn't obscure the Perforce icons.