Move quota icon to core

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files/css/files.scss

@@ -105,9 +105,6 @@
 .nav-icon-trashbin {
 	background-image: url('../img/delete.svg?v=1');
 }
-.nav-icon-quota {
-	background-image: url('../img/quota.svg?v=1');
-}
 
 #app-navigation .nav-files a.nav-icon-files {
 	width: auto;

apps/files/templates/appnavigation.php

@@ -15,7 +15,7 @@
 		if ($_['quota'] !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
 			?>has-tooltip" title="<?php p($_['usage_relative'] . '%');
 		} ?>">
-			<a href="#" class="nav-icon-quota svg">
+			<a href="#" class="icon-quota svg">
 				<p id="quotatext"><?php
 					if ($_['quota'] !== \OCP\Files\FileInfo::SPACE_UNLIMITED) {
 						p($l->t('%s of %s used', [$_['usage'], $_['total_space']]));