Fixed: Odd manufacturing behavior when using too many engineers
Now it is possible to produce more than one unit per hour. (but items got built only on hour basis)
Change: Manufacture more items per hour is now optional: canManufactureMoreItemsPerHour
Default: OFF
Merge pull request #348 from fenyo1/fixMoreItemsPerHour

New Option in options.cfg: canManufactureMoreItemsPerHour