[browser] favicons are not persistently cached on disk

I added an ubuntu-ui-toolkit task to this bug as there was a mention a few weeks back of a generic and transparent mechanism in the UITK to implement a persistent image cache.

As far as I know, the feature was first implemented in unity8 (to persistently cache icons in the apps scope), with a plan to make it more generic and move it to the UITK in the future (see this thread for reference: https://lists.launchpad.net/ubuntu-phone/msg08632.html).

As far as I know there were no plans to have such a cache in toolkit. However we would be glad if someone would contribute that to the toolkit.

This bug was fixed in the package webbrowser-app - 0.23+14.10.20141003-0ubuntu1

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webbrowser-app (0.23+14.10.20141003-0ubuntu1) utopic; urgency=low

  [ CI bot ]
  * Resync trunk

  [ Alexandre Abreu ]
  * Add a simple mechanism (simpler than the one already in place) to
    override user agents for a given webapp. (LP: #1370975)

  [ Alberto Mardegan ]
  * Fix handling of host cookies

  [ Olivier Tilloy ]
  * Ship a PNG icon instead of an SVG, and install it under the app’s
    own data dir. (LP: #1365408)
  * Make an autopilot test more robust by ensuring that the drawer menu
    is dismissed but not clicked. (LP: #1365304)
  * Persistently cache favicons on disk to avoid re-downloading them
    across application runs. (LP: #1340585)
  * Ensure that at most 2 webviews are instantiated at all times, to
    reduce memory consumption. (LP: #1376418)
 -- Ubuntu daily release <email address hidden> Fri, 03 Oct 2014 14:42:27 +0000