Changed mmi_tags to have only 12 columns

[micheles]

The JSON can be extracted by looking at http://HOST/v1/calc/CALCID/mmi_tags.

$ oq show mmi_tags
                   ID_1         number     contents  nonstructural    structural      residents          area  occupants_day  occupants_night  occupants_transit  occupants_avg  mmi
 LBN-ADM1-1590546715-B2    231.000000  3.117281e+07   3.521136e+07  3.876309e+07    3281.099854  9.264670e+04    3383.299805      3330.599854        2205.600098    2973.166748    3
 LBN-ADM1-1590546715-B3     36.000000  4.774555e+06   6.103493e+06  6.380899e+06     386.399994  1.548090e+04     286.300018       384.600006         245.699982     305.533356    3
 SYR-ADM1-1590546715-B1     45.000000  8.964385e+05   8.318501e+05  9.950382e+05     256.000000  6.290300e+03     289.399994       262.599976         173.099991     241.699997    3
 SYR-ADM1-1590546715-B2    799.000000  1.559059e+07   1.815720e+07  2.255524e+07    5561.299805  1.126468e+05    4425.600098      5561.100098        3546.199951    4510.966797    3
 SYR-ADM1-1590546715-B3    236.000000  6.686160e+06   6.667411e+06  8.035755e+06    1211.200073  3.895310e+04    1854.599976      1273.700073         887.799988    1338.699951    3
                    ...           ...           ...            ...           ...            ...           ...            ...              ...                ...            ...  ...

This is much better than having 65 columns like

                  ID_1     number_IV   contents_IV  nonstructural_IV  structural_IV   residents_IV  ...  residents_VIII     area_VIII  occupants_day_VIII  occupants_night_VIII  occupants_transit_VIII  occupants_avg_VIII
LBN-ADM1-1590546715-B2    231.000000  3.117281e+07      3.521136e+07   3.876309e+07    3281.099854  ...        0.000000  0.000000e+00            0.000000              0.000000                0.000000            0.000000
LBN-ADM1-1590546715-B3     36.000000  4.774555e+06      6.103493e+06   6.380899e+06     386.399994  ...        0.000000  0.000000e+00            0.000000              0.000000                0.000000            0.000000
SYR-ADM1-1590546715-B1     45.000000  8.964385e+05      8.318501e+05   9.950382e+05     256.000000  ...        0.000000  0.000000e+00            0.000000              0.000000                0.000000            0.000000