Change icons to mask-image

Removes icons as components, uses mask-image instead.

Sets a size on the .fac icons to 1em so by default they are 1em and retain their aspect ratio.

rename the icon files for consistency.

client/homebrew/brewRenderer/toolBar/toolBar.less

@@ -1,3 +1,5 @@
+@import (less) './client/icons/customIcons.less';
+
 .toolBar {
 	position         : absolute;
 	z-index          : 1;
@@ -94,5 +96,8 @@
 			color            : #777777;
 			background-color : unset !important;
 		}
+		i {
+			font-size:1.2em;
+		}
 	}
 }