vcs: fix get_changesets to .reverse() list of revision hashes in place instead of using reversed() This is slightly more performant, and will also make CollectionGenerator work with reverse=True. Before, CollectionGenerator was used on get_changesets, but never with reverse option. Trying to use reverse, it would fail when applying len(): TypeError: object of type 'listreverseiterator' has no len()

[pytest]
# only look for tests in kallithea/tests
python_files = kallithea/tests/**/test_*.py
addopts =
    # --verbose
    # show extra test summary info as specified by chars (f)ailed, (E)error, (s)skipped, (x)failed, (X)passed, (w)warnings.
    -rfEsxXw
    # Shorter scrollbacks; less stuff to scroll through
    --tb=short
    #
    --doctest-modules
    --doctest-ignore-import-errors