Settings - shortcuts - improve reassign routine

[user0]

XnViewMP 1.7.1 64bit
Windows11 (23H2), display resolution 3840x2160, win scaling 150%

Settings - shortcuts
it is not possible to reassign shortcut at the spot, it requires to unassign it first, which is inconvenient

Suggestion

• improve reassign routine
  - rework dialog into Yes/No to reassign at the spot

• minor UI improvements
  - move currently-assigned-action to the next line
  - show shortcut combination

[xnview]

See issue for current status and some details.

[xnview]

This problem is supposed to be fixed in XnView MP 1.7.2. Please check and confirm the bug fix here.

[user0]

done in 172