EVCC fully standard compliant - Some minor changes

After having conducted another test of RISE V2G against the test system of VERISCO, I am happy to announce that RISE V2G is fully compliant with the ISO 15118 standard!
See also my blog entry http://v2g-clarity.com/en/blog/bulletproof-iso-15118-implementation-risev2g-tested-by-verisco-test-system/.

Also conducted some minor changes which can be found in the change log commit message of commit d8c9fc7.