Main window additions:
  - The "Reload artoa.ini" button has been introduced.

TOA window modifications:
  - The colormap of TOA now matches the nemo2profile colormap.
  - The colors of the sound sources can now be configured in artoa.ini.
  - The soundsources now are displayed as ring and in the configured color.
  - The TOA descriptions are now displayed in every third occurrence.
  - A legend with colors for the soundsources has been added to the window.

It is now possible to enable "Hide deleted data points" on startup by
setting the parameter hidedeleteddatapoints to 1 in the ini file.