run_time and gfs_timestamp placeholders

predict/index.php

@@ -99,7 +99,7 @@ land: <span id="cursor_pred_landrange">?</span>km
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 Download data: <a id="dlcsv">CSV <img src="images/csv.gif" border="0" /></a> <a id="dlkml">KML <img src="images/kml.png" border="0" /></a>
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-Prediction for scenario last run at <span id="run_time"></span> using the <span id="gfs_timestamp"> GFS model.
+Prediction for scenario last run at <span id="run_time">?</span> using the <span id="gfs_timestamp">?</span> GFS model.
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