PD-298 Fix alignment of Go Pro admin menu button.

Author: sheabunge

css/menu-button.scss

@@ -2,19 +2,21 @@
 	color: #fff;
 	background-color: #d46F4d;
 	border: none;
-	display: block;
 	text-align: center;
 	font-weight: bold;
 	transition: background-color .1s linear;
 	white-space: break-spaces;
 	line-height: inherit;
+	display: flex;
+	justify-content: center;
+	align-items: center;
 
 	&:hover {
 		background-color: #08c5d1;
 	}
 
 	.dashicons {
-		vertical-align: text-bottom
+		vertical-align: text-bottom;
 	}
 }