handle (un)installing Extra Resolutions mod

launcher/modManager/cmodmanager.cpp

@@ -300,6 +300,9 @@ bool CModManager::doInstallMod(QString modname, QString archivePath)
 	loadMods();
 	modList->reloadRepositories();
 
+	if(modname == extraResolutionsMod)
+		sendExtraResolutionsEnabledChanged(true);
+
 	return true;
 }
 
@@ -320,6 +323,9 @@ bool CModManager::doUninstallMod(QString modname)
 	loadMods();
 	modList->reloadRepositories();
 
+	if(modname == extraResolutionsMod)
+		sendExtraResolutionsEnabledChanged(false);
+
 	return true;
 }