weldyn2: Redundant Font Awesome CSS and assets loaded with phpBB 3.2

[irydacea]

phpBB 3.2 has a hard dependency on Font Awesome and provides its own shipped version including font files and CSS. However, Wesmere also pulls its own version of Font Awesome even when using the minimal forums stylesheet, resulting in extra code (most of it unused) and more assets to download, thus increased load times.