HH-41776 add content_type argument to put_url
Merge remote-tracking branch 'origin/HH-41776' into EXP-10804
release 2.19.1 [an.sumin@hh.ru]
HH-41451 syntax highlighting in debug [ipetropolsky] [gkostin]
HH-41451 run PEP8 tests on build and fix some PEP8 warnings