Merge pull request #355 from VinceMacBuche/bug_4086/display_role_message

Fixes #4086: Correct node role on deleted and pending nodes
Merge pull request #354 from VinceMacBuche/ust_4096/Add_2.8_logo

Fixes #4097: Add 2.8 Logo
Fixes #4100: Add error log when rudder-users.xml is malformed