Solution : https://service.sap.com/sap/support/notes/741937 (SAP Service marketplace login required)
Key words : 
terms sap logon pad, large iconsorsaplogonpadlistview=small iconsfor, saplogonpadlistview=large iconsfor, ini ini file, small icons, saplogonpadlistview=listfor, saplogonpadlistview=detailsfor, security reasons, list reason, relevant patch
Related Notes : 
       
| 563161 | SAP GUI, SAP ITS & SAP IGS patches on Service Marketplace | 
| 535308 | How to apply a SAP Front End patch? | 
| 361222 | SapPatch: Importing GUI Patches | 
| 330793 | Downloading patches |