i18n: updated translation for Spanish

Currently translated at 8.3% (90 of 1081 strings)

i18n: updated translation for Greek

Currently translated at 99.4% (1075 of 1081 strings)

i18n: updated translation for Chinese (Simplified)

Currently translated at 34.8% (377 of 1081 strings)

i18n: updated translation for Russian

Currently translated at 97.8% (1058 of 1081 strings)

repo group: fix API for updating parent

With other bugs out of the way, the API implementation just has to pass the new
group id correctly.

Note that - as in many other places - moving things to the top level doesn't
work.

Original patch has been modified by Mads Kiilerich.

i18n: updated translation for Norwegian Bokmål

Currently translated at 34.5% (376 of 1087 strings)

git: fix pull request deletion - don't crash on deleting refs to PR heads

The refs name was passed as unicode string, and that would cause failure like:
File ".../site-packages/dulwich/repo.py", line 720, in __delitem__
if name.startswith(b"refs/") or name == b"HEAD":
TypeError: startswith first arg must be str or a tuple of str, not bytes

Fixed by correctly passing the ref name as bytes, as we do when creating the PR
refs.

Tests added by Mads Kiilerich.

contributors: update

Also: welcome in 2020!

contributors: fix existing email-less entry of 'mikespook'

Commit 17bef51d7616 was committed as 'mikespook' without any email address.
This name was thus reflected without email in the CONTRIBUTORS file.

In the i18n copyright data, a 'mikespook' _with_ email address was
referenced. Assuming these two refer to the same person, add a 'name fix' to
combine them.

i18n: move list of translators to contributors file

Some .po files in kallithea/i18n contained lists of translators, present
from before usage of Weblate.

Move this information to contributor_data.py so all translation copyright
holders are given credits as CONTRIBUTORS and on the about page.

This commit is part of a series that normalizes the kallithea.po files by
removing all comments, in particular source code references.

ssh: introduce 'kallithea-cli ssh-update-authorized-keys' command for updating authorized_keys file

Based on work by Ilya Beda <ir4y.ix@gmail.com> on
https://bitbucket.org/ir4y/rhodecode/commits/branch/ssh_server_support ,
incorporating gearbox support by Anton Schur <tonich.sh@gmail.com> and also
heavily modified by Mads Kiilerich.

This commit also incorporates a fix for Windows by Dominik Ruf,
and better handling of the case where the parent dir of 'authorized_keys'
does not exist or is not writable, by Bradley M. Kuhn <bkuhn@ebb.org>.

ssh: admin management of ssh keys

Based on work by Ilya Beda <ir4y.ix@gmail.com> on
https://bitbucket.org/ir4y/rhodecode/commits/branch/ssh_server_support .
Bootstrap support, updates for POST methods, and tests by Anton Schur
<tonich.sh@gmail.com>.
Additional Bootstrap fixes by Dominik Ruf.
Also heavily modified by Mads Kiilerich.

scripts/contributor_data: add to-ignore entry for 'Hosted Weblate'

We don't want to attribute copyright to 'Hosted Weblate' (automatic
translation file updates that accidentally sneaked in).

update-copyrights: fixup double entry for Lars Kruse and regenerate

Caused by translation commit bb62416296db.

contributors: update

(via scripts/update-copyrights.sh)

i18n: updated translation for French

Currently translated at 100.0% (1136 of 1136 strings)

make-release: cleanup and fix bitrot

Try to make the build process more stable and maintainable.

So far, this leaves a problem with node_modules/bootstrap/ and
kallithea/public/css/style.css missing from the release .tar.gz .

update-copyrights: adapt email of Thomas De Schampheleire

Normalize all contributions of Thomas De Schampheleire to @nokia.com.

scripts: add update-copyrights.py

This script will automate how the current attribution and copyright listings
are generated, thus also enabling it to be maintained from repository history
in the future.

This doesn't change anything about who has or hasn't contributed or deserves
credit, it just does a best effort attempt at maintaining existing attribution
we inherited and automating it going forward. The automation might expose
existing problems - they should be fixed by adding or removing exceptions in
the script.

meta: update CONTRIBUTORS and kallithea/templates/about.html from hg

Old content is preserved but not necessarily propagated so they remain slightly
different.

Contributors are sorted by most recent contribution, contribution history and
name.

#518 multiple issues patterns
- added logging
- some code cleanup
- added example of wiki pattern to .ini file
- updated contributors and changelog

Fixed tests for new i18n changes
- added new test for age function
- added new Contributor to RhodeCode

updated CONTRIBUTORS
- code garden

Added header for redhat init.d script
Updated contributors