[Frontend] Tweaks and minor mods

WTD-894
Changed image CSS from contain to cover
Modded default colors for text and telemetry elements to visibility;
Moved click handler position in menu-button.html for better clickability;

Conflicts:
	platform/commonUI/general/res/css/theme-espresso.css

platform/commonUI/general/res/sass/controls/_controls.scss

@@ -318,6 +318,10 @@ label.checkbox.custom {
 		}
 	}
 
+    .l-click-area {
+//        @include test();
+    }
+
 	.type-icon {
 		margin-right: $interiorMargin;
 	}