Merge branch '2740_cleanup'
* 2740_cleanup: (28 commits)
Added new entry to the external panelize - "Modified git files".
Disable resizable menu.
Ticket #2748: wrong message in menu item "Delete tagged files if a copy exists in the other directory".
Fixed handling actions in chmod dialog
(extfs_get_path_mangle): renamed to extfs_get_path_int
(extfs_get_path_mangle): minor optimization.
(panel_reload): fixup of panel current directory obtain.
(edit_load_file_from_filename): fixed file unlocking.
Typo fix in message
(expand_format): minor optimization.
Added default shortcuts for dynamically resize panels.
Fixed preprocessor conditions.
find.c: drop support of legacy config option.
Added macros for Layout and Misc sections of main config file.
Reorder fields in mc_global struct and change type for some of them.
Removed useless return.
Editor: avoid extra screen redraw.
editdraw.c: removed unused defines.
Tweak key bindings.
Tweak background operations support.
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