Pull Request for Issue #787

Summary of Changes

• Methods have been added to allow file exchange with https://crowdin.com
• The library akeneo/crowdin-api has been added to the composer file.
  
  A missing library method has been added to the JTracker code base.
• Properties for crowdin credentials have been added to /etc/config.dist.json

Testing Instructions

Upload new language templates

bin/jtracker update crowdin --create

Upload already existing translated files to crowdin

bin/jtracker update crowdin --translations

Compare:

• https://www.transifex.com/opentranslators/jtracker
• https://crowdin.com/project/jtracker-test-003

This command should be run only once

Download translated files

bin/jtracker get crowdin

Lost in transition

The "percentage completed" values are different on Transifex and Crowdin. I did a quick check on some language files and it seems that Crowdin calculates the "completed" value based on the untranslated words while Transifex uses strings.

Anyway, I believe that all translations should be checked carefully for every language by the respective translators, just to ensure that we do not loose some precious work.

Crowdin does not seem to support po file header informational comments which are supported (and updated) by Transifex. See:

This information is used by our script to generate a list of translators which is included in the credits file. So this wont work anymore.

P.S.:
I firmly believe that this is definitely not the right place to throw flames about the fact that the Joomla! project is moving its translational efforts to a paid service provider without any (visible) discussion or even an announcement, throwing away everything done so far... etc... so I will not do so. Thank you (again).

fix #787