Altered:
- For some reason there was an extra 'k += kStep_' inside of the
geometric switch statement inside AMVariableIntegrationTime.  Probably a
merging issue.
Added total number of points and total energy range previews to
IDEASXASScanConfigurationView using computeTotalTimeImplimentation in
IDEASXASScanConfigurtaion to update those values.
Added drop box to allow users to change peaking time to three different
reasonable ketek energy filter peaking times and have the preamp gain
changed to the correct calibrated value for each.