Add football icon to performance icon selector

assets/css/menu.css

@@ -175,6 +175,9 @@
 .sp-icon-golfball:before {
 	content: "\e603";
 }
+.sp-icon-football:before {
+	content: "\e607";
+}
 .sp-icon-shoe:before {
 	content: "\e800";
 }

modules/sportspress-icons.php

@@ -79,6 +79,7 @@ class SportsPress_Icons {
 			'baseball',
 			'basketball',
 			'cricketball',
+			'football',
 			'shoe',
 			'card',
 		) );