fix: check if a job-file is loaded before computing the hash; update hash when new job-file is loaded

fix: updating canonicalization method works; corrected comparison of job hash for report integrity checks

refacotring modelviews to use base class from report validation, more expressive icons for validating input

refactoring of VectoHash class to allow passing c14n method and digest method, return info about c14n method and digest method

XMLHashProvider requires canonicalization method and digest method for hash computation, provides info about default methods and supported methods

update the reference hash-value of the vehicle (the signature elements of the containing components changed), provide canonicalization method and digest method for hash computation

adapt the test data to contain the same (default) canonicalization methods and digest methods in the signature element

refactoring: use common model for validating job and results, full job-file validation when validating results

Merge pull request #505 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:bugfix/VECTO-566-vehicle-height-is-not-read-correctly to develop

* commit '24a5d7ad':
  read vehicle height into GUI

Merge pull request #502 in VECTO/vecto-sim from ~EMKRISPMI/vecto-sim:feature/Export-Shift-Curve to develop

* commit '83d756ea':
  Added Button in Gearbox-Form to export currently selected ShiftPolygon to a new .VGBS file in the job-file directory

Merge pull request #504 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:bugfix/VECTO-564-vehiclegroup-xml-output to develop

* commit 'b6e1a1c3':
  fix: set vehicle group before initializing report
  remove comments, correct assertion
  adding testcase to reporduce bug

* commit '9515a65f':
  removing MS Unit Test Framework
  switch to NUnit testframework
  remove legacytest project (Vecto 2.2)
  making testcase work with nunit 3.7
  change working directory for nunit tests
  convert all tests to nunit
  removing duplicate file
  adapting testcases to run under NUnit 3.7
  switch to NUnit 3.7

Added Button in Gearbox-Form to export currently selected ShiftPolygon to a new .VGBS file in the job-file directory