Merge branch 'upgrade-babel' into 'develop'

Upgrade babel to v7

Closes #733

See merge request !1029
4 jobs for develop in 4 minutes and 20 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Lint
passed #84434
lint

00:00:49

 
  Build
passed #84435
build

00:01:19

 
  Test
passed #84436
test

00:01:55

 
  Deploy
passed #84437
docs-deploy

00:00:16