hide global credentials in personal when a user cant add mounts

apps/files_external/css/settings.css

+#files_external {
+	margin-bottom: 0;
+	padding-bottom: 0;
+}
+
 #externalStorage td.status {
 	/* overwrite conflicting core styles */
 	display: table-cell;

apps/files_external/templates/settings.php

@@ -84,24 +84,9 @@
 		}
 	}
 ?>
-<form autocomplete="false" class="section" action="#"
-	  id="global_credentials">
-	<h2><?php p($l->t('External Storage')); ?></h2>
-	<p><?php p($l->t('Global Credentials')); ?></p>
-	<input type="text" name="username"
-		autocomplete="false"
-		value="<?php p($_['globalCredentials']['user']); ?>"
-		placeholder="<?php p($l->t('Username')) ?>"/>
-	<input type="password" name="password"
-		autocomplete="false"
-		value="<?php p($_['globalCredentials']['password']); ?>"
-		placeholder="<?php p($l->t('Password')) ?>"/>
-	<input type="hidden" name="uid"
-		value="<?php p($_['globalCredentialsUid']); ?>"/>
-		<input type="submit" value="<?php p($l->t('Save')) ?>"/>
-</form>
 
 <form id="files_external" class="section" data-encryption-enabled="<?php echo $_['encryptionEnabled']?'true': 'false'; ?>">
+	<h2><?php p($l->t('External Storage')); ?></h2>
 	<?php if (isset($_['dependencies']) and ($_['dependencies']<>'')) print_unescaped(''.$_['dependencies'].''); ?>
 	<table id="externalStorage" class="grid" data-admin='<?php print_unescaped(json_encode($_['visibilityType'] === BackendService::VISIBILITY_ADMIN)); ?>'>
 		<thead>
@@ -200,3 +185,21 @@
 		</p>
 	<?php endif; ?>
 </form>
+
+<?php if ($_['visibilityType'] === BackendService::VISIBILITY_ADMIN || $_['allowUserMounting']): ?>
+	<form autocomplete="false" class="section" action="#"
+		  id="global_credentials">
+		<p><?php p($l->t('Global Credentials')); ?></p>
+		<input type="text" name="username"
+			   autocomplete="false"
+			   value="<?php p($_['globalCredentials']['user']); ?>"
+			   placeholder="<?php p($l->t('Username')) ?>"/>
+		<input type="password" name="password"
+			   autocomplete="false"
+			   value="<?php p($_['globalCredentials']['password']); ?>"
+			   placeholder="<?php p($l->t('Password')) ?>"/>
+		<input type="hidden" name="uid"
+			   value="<?php p($_['globalCredentialsUid']); ?>"/>
+		<input type="submit" value="<?php p($l->t('Save')) ?>"/>
+	</form>
+<?php endif; ?>