...and added desert plants to that group. This means cacti and so
forth no longer automatically appear on the desert. They must be
added by hand where they are wanted (weather over sand or any other
base terrain).
...fixing fr / bug #15669
The playlist is taken from a new [titlescreen_music] tag, which has
been set to default_playlist + main menu song
Note that music will always restart with the main_menu theme when
going back into the titlescreen e.g. from the editor, it'd be
difficult otherwise to make it always start with main_menu.ogg on
startup.
...by moving them to a separate subdirectory, renamed
editor2_tool_hint tag (dropped the "2"), added background music
playlist tag for the editor (FR / bug #11407)
