Localization support
Localization support
Update error messages to facilitate localization
Creation of *.pot file + fr_FR localization
Update class-s4wc_gateway.php
Improve localization
Another empty string forgotten

Poedit doesn't like it!
Another string forgotten
Again another string forgotten for localization
Mistake in validation error messages
Improved french translation
Graphical enchancement

The form of the "delete card" button was displayed as a block and the button was not aligned with the other cells text in some browsers.
PR scan.

Mostly some code styling changes. Also reformatting of the .po file to
what CodeStyling Localization puts out.
Merge branch 'pr/33'