Merge tag '1.4.0' into develop

1.4.0
Merge tag '1.4.1' into develop

1.4.1
Merge tag '1.4.2' into develop

1.4.2
Merge tag '1.4.5' into develop

1.4.5
pass intercom env variables to a edx container
bump to 1.5.0
Merge branch 'release/1.5.0'