Ability to enable 'recently selected' values in drop downs

A description of the enhancement required:
Drop-down "recently selected" - Introduce memory of the user selected values from session to session and have the 5 most recently selected values at the top of the drop-down
An example of the enhancement:
Introduce memory of the user selected values from session to session and have the 5 most recently selected values at the top of the drop-down
A story for why the enhancement is required (specifically, how would it aid the business process):
Users often select the same values from long lists, it would help to have the ability for each drop-down to place commonly/recently selected values at the top of drop-down
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