Add filelist_padding to configure structure
Use draw_cell() in move_to_list_pos()

It's code duplication.
Simplify code in calculate_table_conf()
Move filelist.c:draw_cell() below its last use
Rename filelist_padding to filelist_col_padding
Add and use ui.c:ui_view_available_width()

Gets width of part of the view that is available for file list.
Rename calculate_print_width:{old,raw}_name_width
Consider cfg.filelist_col_padding in filelist.c
Fix typo in commnds.c:highlight_cmd()
Add 'tuioptions' option

Controls only padding of file lists in panels for now.

Thanks to Bruce Hunsaker (a.k.a. hunsakerbn).
Add side_borders_visible configuration field

Controls whether side borders are visible (separator in the middle
isn't affected).
Use side_borders_visible in ui.c

Also add header comments for horizontal_layout() and
vertical_layout() functions.
Add "s" flag to 'tuioptions' option
Remove curses UI code from laststatus_handler()

UI unit will take care of it if one asks for it.
Merge branch 'add-tuioptions-option'

Add 'tuioptions' option.  Controls padding of file lists in panels and
visibility of side borders.

Thanks to Bruce Hunsaker (a.k.a. hunsakerbn) and Svyatoslav Mishyn
(a.k.a. juef).
Add border_filler configuration option
Use border_filler on redrawing borders
Better comment for utils/str:split_and_get()
Fix pointer spacing in opt_handlers.c

Also add some comments to global data definitions.
Add 'fillchars' option

Configures fill character for vertical borders.

Thanks Svyatoslav Mishyn (a.k.a. juef).