Merge branch 'stable-3.9'

* stable-3.9:
  Fix logic for email address text field
  Make username column show usernames instead of full names
  Fix another link for context path users
  Fix anchor element for createNotesAsync in config doc
  Make serviceuser work with Gerrit setups with context paths

Solves: bug 350779993
Change-Id: Ie2de27a4b1b7ee9e35d4fd4bb58873207c98fc28