Fix errors translation of security login page
bug #80 Fix errors translation of security login page ()

This PR was merged into the master branch.

Discussion
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Current translation show exception dump on error. This should take care of it.

Commits
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a8a479955ed5011c86e4c59f6bde01dac34ab050 Fix errors translation of security login page
update composer.json

- add Contributors to authors (give some love to OS community)
- switch to PSR-4 instead of using the deprecated PSR-0
refactor deep-directory structure usage