Merge pull request #1737 from xBorderie/patch-13

// AdminTab class: better translation.
Merge pull request #1734 from xBorderie/patch-12

// Information screen: wording.
Merge pull request #1733 from xBorderie/patch-11

// controllers/view.tpl: wording.
Merge pull request #1731 from xBorderie/patch-9

// customers/view.tpl: wording, better translation.
Merge pull request #1730 from xBorderie/patch-8

// customers/list_header.tpl: wording.
Merge pull request #1729 from xBorderie/patch-6

// backup list_header.tpl & view.tpl: better translation, wording.
Merge pull request #1728 from xBorderie/patch-5

// AdminController class: wording.
Merge pull request #1727 from xBorderie/patch-4

// HelperList & AdminTab classes : wording.
Merge pull request #1726 from xBorderie/patch-2

// AdminTranslationsController: wording.
Merge pull request #1725 from xBorderie/patch-1

// AdminThemesController: wording.
Merge pull request #1724 from xBorderie/patch-7

// AdminThemesController: wording.
Merge pull request #1717 from xBorderie/patch-3

// AdminCategoriesController: typo.
// admininformation : store information are now aware of multishop configuration
// BO login page: better translation (1/2).
[-] FO : Fix css bug #PSCSX-1929
Merge branch '1.6' of https://github.com/PrestaShop/PrestaShop into 1.6
// BO login page: better translation (2/2).
// Typo.
Small coding style typos

Tab was used instead of space
[-] BO : fix left and right column display

Hi,
The problem is :
For pages that doesn't exists in 'ps_theme_meta' tables ( like front controller in new module, or add in override/controllers ),
$colums['left_column'] and $colums['right_column'] value is null, so the columns aren't displayed even if $this->display_column_left or $this->display_column_right is set to true.

$column test resolve this problem.
Thanks