Add playlist support
Make gui-related code subclasses of appropriate gtk classes
main_window: Set the length of seek bar to 0 in main_window_reset_control()
Add playlist widget
Simplify the logo svg
Merge branch 'master' into playlist

Conflicts:
	def.h
	main.c
	main_window.c
	main_window.h
	open_loc_dialog.c
main_window: Use macros to calculate default pane handle position
playlist_widget: Show an indicator for the current entry
playlist_widget: Make it possible to rearrange the playlist using DND
playlist_widget: Make it possible to remove entries from playlist using
the delete key
playlist_widget: Remove tree_iter
Change DND behavior

- When files are dropped into the playlist widget, the files will be
  appended to the playlist.
- When files are dropped into the main video area, the files will
  replace the content of the playlist.
Retain playlist visibility before and after entering fullscreen mode
Allow opening multiple files from the open dialog
main: Make get_name_from_path() correctly handle non-paths
Merge branch 'playlist'
Update the logo svg