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/js/lyrics.js

@@ -77,7 +77,7 @@ class Lyrics{
 								break
 							}
 							var lang = text.slice(index1 + 6, index2).toLowerCase()
-							if(strings.id === lang){
+							if(strings.preferEn && lang === "en" || strings.id === lang){
 								var index3 = text.indexOf("<lang ", index2 + 1)
 								if(index3 !== -1){
 									textLang = text.slice(index2 + 1, index3)