GitLab

1. Replace usage of uninitialized arrays
2. Remove unused variables

* Update copyright to 2018 (modify_headers.pl)

* Remove trailing line feed before licence header

* revert licence.txt

* Rename licence.txt to license.txt

Cleaning of @brief / @file
@since version x.y => @since x.y (cf docdev)

Update open comment style on actual headers
Update copyright message
Update copyright date
Delete old copyright on unhandled files (.htaccess, .sql, .sh, .pl, .html, .MD)
Update script :
  - svn -> git + exclude vendor & plugins
  - Add ability to manage .pl, .sh and .sql files
  - Add ability ot have a specific comment character set
  - Add ability to detect files without copyright and request dev action

Update copyright header on all php files using modify_header.pl
Update copyright for .sql, .pl and .sh files

This reverts commit c585ff16.

* Fix #1488 : update year on copyright header on all files (2016 -> 2017)
+ Apply same template on each files (before was 4 differents templates)
+ Add words "and contributors" on actual copyright as in template (b1a4e827)

* Issue #1476 - fix bad display of attachment's date in a ticket

* Revert "Issue #1476 - fix bad display of attachment's date in a ticket"

This reverts commit 2efd34c0.

* Fix #1488 : update year on copyright header on all files (2016 -> 2017)
+ Apply same template on each files (before was 4 differents templates)
+ Add words "and contributors" on actual copyright as in template (b1a4e827)

* Resolve PR conflicts

  <!-- White space after IF keyword -->
  <rule ref="Squiz.ControlStructures.ControlSignature" />

+ Fix current code for this rule

Part of #1209