update the barion pixel to the latest version, update the logo picture…

[kevindree]

1. update the barion pixel to the latest version, since barion has changed his pixel code.
2. update the logo picture which will be shown in the checkout page, since the logo picture has been changed by barion.
3. change the icon link to barion homepage, since the previouse page is dispeared.

[gcsecsey]

@szelpe could you please help with approving/merging this?

[szelpe]

Thanks, I released your changes to version 3.5

[kevindree]

I am very glad to contribute to this project, Thank you for all your effort as well,