Reference issue number:#164 - #256 - #250 - #213 

Modified graphical user interface and added new css file, image and logo placeholders replaced, changed the naming of the buttons, and file translation

# 164 Aligning a div (ill-posed problem) 
# 256 ​​Inserting buttons svg (ill-posed problem) you will not use more than the svg format for buttons 
# 250 The font was replaced with the standard used by browsers the reported problem is no longer valid 
# 213 The bug described has been Fixed