Update 744x1052 poster promotion:
    
        - Stop using the centered bottom alignment to group The CentOS
          Symbol, The CentOS Type, the copyright notice and the url
          information. Instead, align symbol, type and copyright note to
          left; the url information is at the same level of copyright note
          but aligned to the right.
    
        - The CentOS Logo was also updated to fit the 2:1 height proportion.