Escape spaces in file urls

astrid/plugin-src/com/todoroo/astrid/files/FilesControlSet.java

@@ -314,6 +314,7 @@ public class FilesControlSet extends PopupControlSet {
             @Override
             public void run() {
                 String urlString = m.getValue(FileMetadata.URL);
+                urlString = urlString.replace(" ", "%20");
                 String name = m.getValue(FileMetadata.NAME);
                 StringBuilder filePathBuilder = new StringBuilder();
                 filePathBuilder.append(activity.getExternalFilesDir(FileMetadata.FILES_DIRECTORY).toString())