[*] MO - Paypal : begin to add back office configuration for paypal login
Merge pull request #1 from PrestaShop/master

Merge Head
Merge remote-tracking branch 'upstream/master'
TEXTM-140 : fixed problem connected with missing products in products selection table when creating new project. Also found bug connected with uncleared filtering and fixed it.
Merge pull request #3 from remixaz/master

TEXTM-140 : fixed problem connected with missing products in products se...
[+] MO PayPal : Add PayPal Login
[+] MO PayPal : Add PayPal seamless Checkout
[*] MO PayPal : Change api call of tokenservices
[*] MO PayPal : Up API version
[-] MO PayPal : Add logs
[-] MO PayPal : Disable logs to PayPal Login
Test commit, changed copyright.
Added CSS for payment button, 1.6 compatibility.
Added card logos
New payment button, 1.6. compatibility.
Use CSS instead of HTML styling for tables.
Version change.
Changed default button text.
Revert "Changed default button text."

This reverts commit 9a1c87ad99ead16c515fd4482101f388cb30624e.
Changed default button text.
Updated all copyright.