Merge branch 'security-fix-new-issues-login-message-11-5' into 'security-11-5'
[11.5] Use common error for not logged in users when creating issues See merge request gitlab/gitlabhq!2813 (cherry picked from commit 6a1c300fadddd9d534cacc9a7c0afd5ea6b04014) 0cb3920b Use common error for unauthenticated users