[issue2551071] Update jinja template to bootstrap 4

New submission from John Rouillard:

Christof is looking at applying the pull request from aparcar at:

  https://github.com/roundup-tracker/roundup/pull/1

We have an email trail running in roundup-users:

  https://sourceforge.net/p/roundup/mailman/message/36672441/

Also his existing work:

>BTW, I have cleaned up whitespace changes and indentation for the
>template changes at
>https://bitbucket.org/cmeerw/roundup/commits/8b0f049af488becd1f18ff70d
ab23b9f23dd2557?at=jinja2-bootstrap

Putting this here so it (hopefully) doesn't get lost again.

----------
assignee: rouilj
components: Web interface
keywords: patch
messages: 6827
nosy: aparcar, cmeerw, rouilj
priority: normal
severity: normal
status: new
title: Update jinja template to bootstrap 4
type: rfe
versions: devel

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