add rule for .onion URIs

* Build as nobody

This showld fix coverage files writing. At least some coverage files
(*.gcda, *.gcno) are written by rspamd running as nobody.

* Comment luacov-coveralls

* Run rspamd-test as nobody too

* Run coveralls from build root (/rspamd/build)

It need to find all `.gcda` files.

* Hack for coveralls was moved to Docker image

* Add test debug

* More debug

* Workaround to writing *.gcda from different users

*.gcda files written in parallel by root and by nobody

* Remove debug

* Use current build number instead of previous

* Remove unused variable

* Add more parameters

- If CI detected we don't need to check if service_job_id and other
fields in json already filled - this info anyway comes from environment

- coveralls.io API is not documented. Code from:
https://github.com/lemurheavy/coveralls-ruby/
and
https://github.com/coveralls-clients/coveralls-python/
was used as an example.

* In case of error there is no url in json respnse

Print message field anyway - it can contain useful error message.

* Add debug

* Simplify

* Fix: for pull request CI_BUILD_EVENT set to 'pull_request'

* Remove debug

[WebUI] Colorize symbols

merge upstream into local master

* Start switchind test to custom Docker images

Using Docker images with pre-installed delendencies will speedup
testing.

* Debug build in drone.io

* Use variable instead hardcoded path to the source

* Debug variable substitution by drone

Also according to comments in code DRONE_WORKSPACE is deprecated and
CI_WORKSPACE is a new form.

* One more try to use variables.

It looks like drone uses same rules as docker-compose:
https://docs.docker.com/compose/compose-file/#variable-substitution

* Cleanup debug

* Less verbose make output

* Be consistent in variable escaping

It works without escaping only becuse ${VAR} currently expanded by
drone, but $VAR is not.

* Use alpine base image for nodejs

It is smaller.

* Return rspamd-test

* Revert variable escaping

Wihtout escaping it is more easy to copy-past command for testing.
Just don't use ${var} when var should be expanded by shell and not
drone.

* Add debug

* Fix yaml parsing error

* Fix exit code capture

It should be done on the same line, because drone insert 'echo + cmd'
between commands.

* Remove debug

* Readability

No functional changes.

* Return functional tests

* Be consistent

* Add git stub for coveralls

* Send coverage

* Fix yaml parsing error

* Add links to Dockerfiles

* Send test log in case of test failure

XXX if rspamd-test failed, but functional was successful robot log will be
attached (but not useful).

* Don't run rspamd-test and functional tests in parallel

It looks like there is a race condition in writing coverage files.

* Try to run tests in parallel

* Add debug

* Fix parallel test run

test/rspamd-test and functional test both use luacov.stats.out file
in current directory. Run ./rspamd-test from anther directory.

* Use drone condition for sending coveralls report

Also don't send report if empty tocken was provided.

* Add mininal python3 compatibility

Issue: #2587
Closes: #2587

[WebUI] Add symbols sorting buttons

to detail history rows

Issue: #2578
Closes: #2578

Drone ci