web app: favicon

[kotecky]

A tiny non-issue: the favicon of the web app (https://runbox.com/_img/index/logobox.png) is different from the current Runbox logo. On purpose?

[gtandersen]

The only reason is that we haven't had time to update it yet. :)

[freakingjesus]

Hi Runbox maintainers, is this favicon issue still desired and still eligible under the Runbox 7 feature bounty program as a small/Iron-level enhancement?

I noticed the earlier closed PR #1805 and would keep a new PR narrower: update only the favicon references/assets needed for #922, avoid unrelated changelog or generated-file churn, and include the smallest practical regression/policy check if that is the expected test approach.

Please confirm whether that scope is useful before I start.