delete unused images
add courses info for account deletion confirmation dialogue
Merge branch 'dev' into rc
Merge branch 'dev' into rc - dev green
[2125] delete unused images
fixes #2125
Merge branch 'master' into Issue1301
[1301] adminAccountManagent: mention account ID to be deleted in 'Delete entire account' confirmation dialog
fixes #1301
Merge branch 'master' into AccessControl