[issue2551261] Repurpose superseder field to related field.

New submission from John Rouillard:

Change the superseder field label to "Related" in issue.item.html.

Add search on Related (Superseder) to issue.search.html.

Add display of Superseder field (with title Related) to issue.index.html.

The current tracker has a handful of uses of superseder field in issues:

1238984
1881085
1912923
1946564
1985891
2550508
2550524
2550556
2550560
2550612
2550635
2550792
2550816
2550858
2550859
2550940
2550990
2550997
2551027
2551173
712084
933936

so I don't think this is going to be a major issue.

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assignee: rouilj
components: Infrastructure
keywords: Effort-Low
messages: 7723
nosy: rouilj
severity: normal
status: new
title: Repurpose superseder field to related field.
type: behavior

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Roundup tracker <[email protected]>
<https://issues.roundup-tracker.org/issue2551261>
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