Merge branch 'readthedocs' into 'master'

fix doxygen version on readthedocs

See merge request !60
Status Job ID Name Coverage
  Style
passed #31717
integration
checkpatch

00:00:07

passed #31716
integration
repoquality

00:00:11

 
  Build
canceled #31718
make:generic

canceled #31719
knl
make:knl

 
  Docs
canceled #31720
integration
readthedocs