move notifiation icon path to game_config
fixup whitespace, comments in desktop/notifications.cpp
Resolved overlapping hotkey definitions.

Refresh editor display: ctrl+e ---> ctrl+d

New Map: ctrl+n ---> ctrl+m
Made the classic minimap satellite view the default.
Made the classic minimap color coding the default.
Liberty: Put the DEFAULT_SCHEDULE_* macros in use.
EI, TSG, TB: Put DEFAULT_SCHEDULE_* macros in use.
Disable the swap palette button when the unit palette is active.
Disable playlist and schedule menues for pure maps.

Conflicts:
	src/hotkey/hotkey_command.cpp
Fix two border tiles.
Enabled the terrain description dialog in the editor.

Conflicts:
	data/themes/editor.cfg
	src/editor/editor_controller.cpp
Put the DEFAULT_SCHEDULE_* macros in use.
2x change from return by copy to return by reference on const strings.
Display the tooltip for hovered hotkey actions.
Enabled the corresponding action icons to be shown in the list.
Repair the sorting of the hotkey list.
Default hotkeys for editor brushes(1-5) and terrain description(ctr+t).
Show the selected area changed status in the area menu.
Fix error message about missing ui elements.
Fix for bug #21298: Minimap shows invisible overlays