introduce enum for legislative class, add input field in gui, add reading wrinting json field, change signature of xml reading methods

Standard Browser resolution corrected. Opening User Manual corrected. Updated Jquery Versions in User Manual

add axle type to vehicle dialog, write axle type into json job, read axle type from json job (optional), changing labels, correction enable/disable PTO in declaration mode

implementing XML Report generation. fetching all required input data, make airdragdata a separate component

exending input data for engine (new json format version), extending vsum output, adding input fields for additional engine parameters, adapt expected results (updated sum-files)

adding new municipal cycle, pto cycle, pto idle losses; read pto data in declaration mode; add pto for declaration mode (data adapter, declaration factory), testcases for reading PTO in declaration mode

major refactoring: use multiple full-load curves, one per gear. introduce vehicle-defined limits and gearbox-defined limits

all test-cases green.