X4: remove unused imports.

X4: signal 49: enable.

X4: grinding: include the current grind profit in infos.

X4: grinding: rework.

X4: rebuy mode: fine tune the buy conditions.

X4: grinding: fine tune the buy thresholds.

X4: signal 10: rework.

X4: grinding: fine tune the buy conditions.

X4: grinding: fine tune the buy thresholds.

X4: signal 107: rework.