Test Geonode 3.2.x for release

[giohappy]

@ElenaGallo we need to run the full test suite on development demo (3.2.x), to prepare the release of version 3.2.3.

Add a test as reported in this comment #1140 (comment)

[ElenaGallo]

@giohappy I tested the stable demo, here the result of the test run 3.2.x.

I only found this problem also found on 3.3.x and another problem is that many layer thumbnails, maps, images, videos are broken.