Make config.go defaults the same as config.json. (#5605)

model/config.go

@@ -76,10 +76,10 @@ const (
 	EMAIL_SETTINGS_DEFAULT_FEEDBACK_ORGANIZATION = ""
 
 	SUPPORT_SETTINGS_DEFAULT_TERMS_OF_SERVICE_LINK = "https://about.mattermost.com/default-terms/"
-	SUPPORT_SETTINGS_DEFAULT_PRIVACY_POLICY_LINK   = ""
-	SUPPORT_SETTINGS_DEFAULT_ABOUT_LINK            = ""
-	SUPPORT_SETTINGS_DEFAULT_HELP_LINK             = ""
-	SUPPORT_SETTINGS_DEFAULT_REPORT_A_PROBLEM_LINK = ""
+	SUPPORT_SETTINGS_DEFAULT_PRIVACY_POLICY_LINK   = "https://about.mattermost.com/default-privacy-policy/"
+	SUPPORT_SETTINGS_DEFAULT_ABOUT_LINK            = "https://about.mattermost.com/default-about/"
+	SUPPORT_SETTINGS_DEFAULT_HELP_LINK             = "https://about.mattermost.com/default-help/"
+	SUPPORT_SETTINGS_DEFAULT_REPORT_A_PROBLEM_LINK = "https://about.mattermost.com/default-report-a-problem/"
 	SUPPORT_SETTINGS_DEFAULT_SUPPORT_EMAIL         = "feedback@mattermost.com"
 
 	LDAP_SETTINGS_DEFAULT_FIRST_NAME_ATTRIBUTE = ""