Prevent special characters from breaking the file drop remote url

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

apps/files_sharing/js/files_drop.js

@@ -35,7 +35,11 @@
 				useHTTPS: OC.getProtocol() === 'https'
 			});
 			
+			// We only process one file at a time 🤷‍♀️
 			var name = data.files[0].name;
+			// removing unwanted characters
+			name = name.replace(/["'#%`]/gm, '');
+
 			try {
 				// FIXME: not so elegant... need to refactor that method to return a value
 				Files.isFileNameValid(name);