Changes

* Coding style to use is the PSR-2 (https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md). There is however exceptions:

* Coding style to use is the PSR-2 (https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md). There is however exceptions:

** Length of line: PSR-2 mention we can go up to 120 characters on same line, this is a soft limit. It is better to have long lines instead of long page with code content that is just data declaration and does not contain any logic. However, we introduced a hard limit of 1000 characters (having line larger that this will return errors on Continuous Integration tests).  

** Length of line: PSR-2 mention we can go up to 120 characters on same line, this is a soft limit. It is better to have long lines instead of long page with code content that is just data declaration and does not contain any logic. However, we introduced a hard limit of '''1000''' characters (having line larger that this will return errors on Continuous Integration tests).  

** Tabs are allowed: The other exception is that we don't replace the tabs with spaces. Using tabs is more convenient for most editors/developers. Also using spaces breaks some auto-format features (like Eclipse autoformat feature on some Eclipse version).

** Tabs are allowed: The other exception is that we don't replace the tabs with spaces. Using tabs is more convenient for most editors/developers. Also using spaces breaks some auto-format features (like Eclipse autoformat feature on some Eclipse version).

** Note 1: The following rule are very important to follow:

** Note 1: The following rule are very important to follow: