Changelog retention time not shown in UI when set to Indefinite

[Grokzen]

Environment

• Python version: 3.7.x
• NetBox version: 2.6.5

Steps to Reproduce

1. Set django setting CHANGELOG_RETENTION = 0 in config
2. View changelog list page http://localhost/extras/changelog/
3. Scroll down to bottom

Expected Behavior

Text Changelog retention: Indefinite to be visible/seen

Observed Behavior

No text/div is rendered

Cause

When setting the variable to 0 to indicate Indefinite time, the if check that checks if the div and text should be rendered is done in sucha way that it evaluates to False if the value is 0 and the output is not rendered.

https://github.com/netbox-community/netbox/blob/develop/netbox/templates/extras/objectchange_list.html#L12

Possible solution is to change the if check to this, it is not good/optimal, but it does the job and the text is again rendered as the expected text.

{% if settings.CHANGELOG_RETENTION >= 0 %}

References

#3264
#3368