GitLab

- show wait cursor while reading and writing files
- save settings of splitter in configuration
- filelist is now subclass of QListBox and is used instead of
  mp3ListBox

set by overwriting method sizeHint() instead of resizing, which would
result in a wrong size of the QScrollView.

- Added CONFIG_DEBUG option to generate code with debugging
  information

- Added CONFIG_DEBUG option to generate code with debugging
  information
- use msgmerge to add new translations instead of xgettext which
  removed all umlaute