Topic: v5.2

The output of the HTML interface has been modified:
1) Stellar enhancement factors (SEFs) are not shown anymore, as the g.s. contributions (X-factors) are the only correct way to judge the difference between g.s. rate and stellar rate.
2) Reactivities are not shown for reaction channels with negative Q-value. Those have to be computed from the reverse reaction with Q>0 and applying detailed balance.