Remove the crosshatched background of the canvas

[anthonydillon]

Replaced with the new #f5f5f5 flat background color.

[jujugui]

please test this

[hatched]

👍 QA OK
Thanks for doing this on pyramid-fork!

[hatched]

Other reviews were done on the previous branch targeting develop

[jujugui]

Build failed: Attempt to land pull request failed
build url: http://ci.jujugui.org:8080/job/juju-gui-merge/981

[hatched]

spurious landing failure...

[jujugui]

Build failed: Attempt to land pull request failed
build url: http://ci.jujugui.org:8080/job/juju-gui-merge/989

[jujugui]

Build failed: Attempt to land pull request failed
build url: http://ci.jujugui.org:8080/job/juju-gui-merge/991

[hatched]

Now that CI is fixed the unit tests are now failing with this branch, can you please update from pyramid-fork and then take a look at those failing tests. Thanks!

[hatched]

Unit tests are now passing. Thanks @anthonydillon

http://ci.jujugui.org:8080/job/juju-gui/2812

[jujugui]

Status: merge request accepted. Url: http://ci.jujugui.org:8080/job/juju-gui-merge