Song select fixes

- Searching diverge:yes returns songs with branches
- Fade out music slightly while search window is open
- When opening search box with a saved query, all the text gets selected
- Fix Ctrl+F not working during song select fade in
- Fix edge case highlighting only working on lowercase letters
- Fix right clicking selected text in the search box so it no longer gets unselected
- Fix Netplay option appearing when netplay is offline
- Use category id instead of name in the generated stylesheet
- Languages can choose to fallback to english instead of japanese with preferEn

public/src/css/search.css

@@ -48,7 +48,7 @@
 	padding: 0.5em 0.7em;
 	border-radius: 0.2em;
 	border: 0.13em black solid;
-	font-family: TnT;
+	font-family: inherit;
 	box-sizing: border-box;
 	-webkit-box-sizing:border-box;
 	-moz-box-sizing: border-box;