[Run dialog] When completion is not unique, show list of possible completions
[Run dialog] Make "show completion list" optional
[Run dialog] Cleanup, fixes and optimizations for listing completions
[Run dialog] Don't show completions if less than 3 characters are present
Merge remote-tracking branch 'dalcde/alt-f2-suggest'
[run dialog] some adjustments to command-completion box
[window-list] Avoid duplicates in alert-list.