front-end: Use select2 from node_modules and stop bundling it select2 3.5.4 was added in 304e83e9bcde ... but the latest npm release in the 3 series is 3.5.1, so we use that one instead. We should probably upgrade to the 4 series. The select2 images were not in the location the generated css pointed - now we copy them from node_modules to the right location, next to the generated css. Note: this will drop 190cb30841de "branches: fix performance of branch selectors with many branches - only show the first 200 results" ... but it should no longer be relevant now when we use server side filtering. 15e507047bae introduced select2-bootstrap.css - it is not clear what version was used, but we use the latest 1.4.6 which also is very old.

[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