Release 6.20.0: New configuration settings available for the send error report

[changerequest]

Introduced new configuration settings which can be set by an admin. The new setting can be found in the ui.properties:

# Enables the send error report option at the error history dialog
# Possible values: true (default) | false
ui/global/notifier/report/sendEnabled = true

# Default recipient address used when sending the error report
# Possible value: valid mail address
# ui/global/notifier/report/mailAddress = support@example.org