fix: handle case when max cooling power for driver and passenger is 0 => set COP to 1 (avoid division 0/0)

Merge pull request #11 in VECTO/vecto-dev from ~EMQUARIMA/vecto-dev:bugfix/VECTO-1250-error-creating-new-gearbox-file-from-scratch to Releases/v0.6.0.1884

* commit '2e4353d9':
  cherry pick commit to fix bug in gearbox editor when creating new gearbox file

(cherry picked from commit 74df1e83ba875d6c2b23858431bba3996c082f28)
(cherry picked from commit 2de9d234)

harmonize namespace prefixes: use version number - this way it is easier to identify in a later schema version where the type was originally defined

updating documentation on xml input schema, make sure all pictures are similar, adding namespace and base type info

updating generic vehicles: adding new generic vehicles for medium lorries, primary bus, single bus, and VTP sample data (declaration mode), removing old (ricardo-aux) bus model

buses: for vehicles with a width between 2.5 and 2.55m use 2.5m as width. for all other vehicles use the actual vehicle width for calculations

bugfi eco-roll: calculation of accelerationPedalIdle - use P_fc-map (=totalTorqueDemand) and compare with drag power, not P_ice_out)

(cherry picked from commit 3db42eb2ce143f93d1e08fa091a818c181581df6)

bugfix medium lorry vtp: use mission dependent whtc correction factors (LH for heavy lorries, RD for medium lorries)

remove alternator ratio from input data, remove manufacturerprimaryvehicle, manuracturercompletedvehicle in xml input data

adapt XML schema: rename manufacturer and manufacturer address (remove primary /  completed); allow vehicle category Van for medium lorries, remove ratio for alternators;
adapt sample xml files