Add files drop capability for clients

apps/files_sharing/lib/Capabilities.php

@@ -69,6 +69,7 @@ class Capabilities implements ICapability {
 
 				$public['send_mail'] = $this->config->getAppValue('core', 'shareapi_allow_public_notification', 'no') === 'yes';
 				$public['upload'] = $this->config->getAppValue('core', 'shareapi_allow_public_upload', 'yes') === 'yes';
+				$public['upload_files_drop'] = $public['upload'];
 			}
 			$res["public"] = $public;
 

apps/files_sharing/tests/CapabilitiesTest.php

@@ -232,6 +232,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		];
 		$result = $this->getResults($map);
 		$this->assertTrue($result['public']['upload']);
+		$this->assertTrue($result['public']['upload_files_drop']);
 	}
 
 	public function testLinkNoPublicUpload() {
@@ -242,6 +243,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		];
 		$result = $this->getResults($map);
 		$this->assertFalse($result['public']['upload']);
+		$this->assertFalse($result['public']['upload_files_drop']);
 	}
 
 	public function testNoGroupSharing() {