Remove unused Object member causing problems with serialization; back to previous serializationUID
Fixed crash when an upload is confirmed with no file selected
Fixed crash in test of files downloading / uploading
Fixed bad update of details view for an uploading file when it finishes, resulting in a renamed file due to other file in the server with the same name ; and subsequent crash got by pressing 'Cancel'
Fixed crash when uploading a file in any account after cleaning app data
Fixed bug preventing the enter in empty folders when uploading files from external apps through 'share to' or 'send'
Fixed bug: empty folders are kept in device database when sucessfully removed
Merge branch 'master' into crash_fixes