[Frontend] IN-PROGRESS Theming continues, sanding

open #95
Fixed grid icon hover color;
Various color normalization;

platform/commonUI/general/res/sass/_mixins.scss

@@ -268,6 +268,7 @@
 
 @mixin btnBase($bg: $colorBodyBg, $bgHov: none, $fg: $colorBodyFg, $ic: $colorBtnIcon) {
 	@include user-select(none);
+    @include transition(background, .25s);
 	.icon {
 		color: $ic;
 	}