Add information about the invalid markets

[Adamantios]

Example:

                                Open           Pending        Finalizing       Arbitrating            Closed           Unknown             TOTAL
------------------------------------------------------------------------------------------------------------------------------------------------
Num_trades                        24                 6                 6                 0               440                 0               476
Winner_trades                      0                 0                 2                 0               204                 0               206
Num_redeemed                       0                 0                 0                 0               204                 0               204
Num_invalid_market                 0                 0                 0                 0                67                 0                67
Mech_calls                        64                58                 8                 0              1154                 0              2199
Investment                16.46 xDAI         3.11 xDAI         4.10 xDAI         0.00 xDAI       138.00 xDAI         0.00 xDAI       161.66 xDAI
Fees                       0.34 xDAI         0.06 xDAI         0.08 xDAI         0.00 xDAI         2.82 xDAI         0.00 xDAI         3.30 xDAI
Mech_fees                  0.64 xDAI         0.58 xDAI         0.08 xDAI         0.00 xDAI        11.54 xDAI         0.00 xDAI        21.99 xDAI
Earnings                   0.00 xDAI         0.00 xDAI         2.65 xDAI         0.00 xDAI       133.65 xDAI         0.00 xDAI       136.30 xDAI
Net_earnings             -17.43 xDAI        -3.76 xDAI        -1.61 xDAI         0.00 xDAI       -18.70 xDAI         0.00 xDAI       -50.65 xDAI
Redemptions                0.00 xDAI         0.00 xDAI         0.00 xDAI         0.00 xDAI       151.97 xDAI         0.00 xDAI       151.97 xDAI
ROI                     -100.00 %         -100.00 %          -37.83 %            0.00 %          -12.27 %            0.00 %          -27.09 %