add customTitle script for config page

i still need to think about how to make it work though

scripts/preferences/injector.js

@@ -1,4 +1,4 @@
-let scriptsToInject = ["changeSearchEngine", "greetingSettings", "clockSettings", "enableQuote", "changeTheme"]
+let scriptsToInject = ["changeSearchEngine", "greetingSettings", "clockSettings", "enableQuote", "changeTheme", "customTitle"]
 let stylesToInject = ["main", "selectSearchEngine", "greeting", "clock", "quote", "theme", "customTitle"]
 
 for(let i = 0; i < scriptsToInject.length; i++) {