Merge branch '136-improve-the-visuals-for-category-icons' into 'develop'

Resolve "Improve the visuals for category icons"

Closes #136

See merge request !125
2 jobs for 142-only-show-the-cut-paste-dialogue-if-the-user-is-logged-in in 8 minutes and 24 seconds (queued for 3 minutes and 35 seconds)
Status Job ID Name Coverage
  Test
passed #160864
node
Static

00:03:18

passed #160863
node ng google-chrome
Tests

00:05:05

73.74%