dhc3: fix the transmission of variants over multiplayer again
CRJ700-family: micro bug-fix: the fuel flow was incorrectly displayed in PpH instead of KpH.
dhc3: improve steering on the ground.
707: minor adjustments to the cargo liveries.
707: realism: delete the middle cargo section and adjust the max weight on the others.
707 (FDM 707.xml): FDM improvements.
707: (707.xml): re-indent before other changes.
707 (fuel-and-payload.nas): obey /sim/speed-up in interpolations.