UI: ability to see the stack name in the stack column

[cablehead]

From @0n0mat0p03ia on Discord:

Feedback: as a user, I find it difficult to see at a glance when a stack was created, because only the beginning portion of the datetime is displayed (e.g., Sat, May 1...) I cannot resize the divider between the stack column and the clipped item column.

Suggestion 1: consider changing the default datetime format to a shorter format, e.g., MM-DD-YYYY HH:MM or DD-MM-YYYY HH:MM. Even better, allow the user to specify their preferred datetime format, since format usage varies by locale.

Suggestion 2: allow the user to resize the divider between the stack and clipped items column.

Suggestion 3: show a tooltip with the stack's datetime when the user hovers the mouse cursor over it. (Especially helpful if you keep the current datetime format).

[cablehead]

Suggestion 3 should be quick..

[cablehead]

Suggestion 3 is implemented