Add n_ppc to the summary table of the admin page

[monodera]

This PR add columns requested by Arai-san as Issue #381.

• N_PPC (selected in PPC dtails / total)
• Requested FH requested finally in “PPC details”.
• Completion rate (%) requested finally in “PPC details”.
• ROT (h) requested finally in “PPC details”.
• Also, current Time_tot_L(h) is the same as "ROT with 100% for L(h)" completion.
• Maybe too much request: Can we show the means of terminology when we put mouse cursor in the column name?