Move rest of config to settings

Remove config.php completely
Add new settings category: Game
Fix account_login_by_email
Min textarea size = 2 + adjusted automatically

system/templates/admin.settings.html.twig

@@ -18,6 +18,11 @@
 		</form>
 	</div>
 </div>
+<style>
+	.setting-default {
+		white-space: pre-wrap;
+	}
+</style>
 <script>
 	function doShowHide(el, show)
 	{