Issue #3473023: Solved PHP_CS errors and enabled gitlab-ci.

Closes #3473023

added 7 commits

• 4dd9d8df...b2f61d47 - 5 commits from branch project:1.0.x
• 19046924 - Merge branch '1.0.x' into 3473023-fix-the-issues
• 99efaaf3 - Fixed some more coding standards and issues.

Compare with previous version

merged