core: add option "scroll_beyond_end" for command /window (task #6745)
core: do nothing in "/window scroll_beyond_end" if the buffer has no lines
core: fix pointer used to check if buffer has lines
core: fix filtered line displayed after /window scroll_beyond_end
core: scroll to bottom after smart jump (alt-a) only if window was scrolled (and not beyond the end)
Merge branch 'scroll-beyond-end'
core: update translations
core: add task #6745 in ChangeLog