Bugfix release for macOS

Fixing tray bar images by purposefully reverting to an older Java AWT standard when rendering icons on a macOS system >= 11.
Also make the naming convention of FMC cutout sheets less confusing.

#674 Esperanto translation thanks to @zeecho
#676 Unified FMC title string computation across "regular" sheet and cutout sheet
#670 Force AWT tray mode on macOS (bugfix, see above)