Make ScanInfoLine translation friendly

[Eahlstan]

Note that the translation you mentioned before

if (nSurfaceTemperature.HasValue)
            scanText.AppendFormat("Surface Temp: {0}K\n".T(EDCTx.JournalScan_SurfaceTemp), nSurfaceTemperature.Value.ToString("N0"));

has a line break in it. SIL doesn't like line breaks, so it can't be reused.

[Eahlstan]

Also the new temperature was missing your beloved "what if there's an error and no value?" check.

[robbyxp1]

Thanks