[Description] First time to use Web Apps, tutorial show up but the background image will much late than Next button and string on top of screen [Reproduce Steps] 1. Launch Apps -> Web Apps/Dev Web Apps [Build Information] Environment: 2.5 Simulator Gaia: https://github.com/mozilla-b2g/gaia/commit/184523b202608f24e01cda720370de3ee7c5b8c3 Gecko: https://hg.mozilla.org/releases/mozilla-b2g44_v2_5/rev/be1ec31308366db734d15a04db7c4b4697515b20 Mulet: https://hg.mozilla.org/releases/mozilla-b2g44_v2_5/rev/be1ec31308366db734d15a04db7c4b4697515b20 [Expected Result] Show full tutorial at the same time, no matter button, string, or image [Actual Result] Background image show up much late than button and string Please help to check with attachment, thanks.

Hi Davor, When tutorial image loads for the first time, it takes some time so the strings and the button will show up first with blank background. I made a lazy load function in this patch which ensure the content show up after the image had loaded. I am not sure if this is the best solution, if you have any better practices, please let me know. Thanks :)

Hi Davor, I need your advise on this patch, can you take a look at it? Thanks.

Commented in the PR, looks good overall just needs some tweaking.

Landed in marketplace-tv-front-end master. https://github.com/mozilla-b2g/marketplace-tv-front-end/commit/72b22c5c31d148be137c590b95ad4963fbc6f258

verified and fixed with the latest 2.5 build

According to the comment from previous review (https://github.com/mozilla-b2g/marketplace-tv-front-end/pull/33#discussion_r50894461), this patch will add a spinner when the tutorial image is loading. Thanks for Helen's help.

Landed in marketplace-tv-front-end master. https://github.com/mozilla-b2g/marketplace-tv-front-end/commit/a6a25e35f2c19b79fb1c883f214f7d573a4f2503