It is possible for the history shown in the security bugs report to
change from report to report under rare conditions. This commit adds
a small notice to make users aware of this.
<p>Attached to this email are some graphs with stats for the past 12 months.</p>
+<p>This report was generated from the live Bugzilla instance. In rare cases, historical statistics may vary from prior reports if [% terms.bugs %] were reclassified after those reports were generated.</p>
+
[% IF missing_products.size %]
<p>The following products requested on this report are no longer active in BMO:
[% FOREACH missing_product IN missing_products %]