- added new fields to the Health Check Settings dialog (XenServer credentials)
- these credentials are saved as xapi secrets, and on un-enroll they are being removed
- removed the Authenticate button; the authentication is now done on pressing the OK button
- the Health Check Settings dialog is displayed on "Enroll now" and "Edit Health Check settings"
- display the "Last Successful Upload" on the Health Check Overview dialog
- use uniform format when converting time to string and string to time
Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
