Update CentOS brand types:
- The number four (4) was used as reference to build the release
number brand. Other numbers, except seven (7), have rounded
borders outside font's baseline which made them not appropriate
to be used as reference.
- The number four (4) was used as reference to define the release
number left margin. This value was aligned to bottom taking
CentOS word as reference. Distance between CentOS word and
number four was set to 10mm.
- The release numbers begining with one (e.g., 1, 10, 11, etc.)
were aligned using the number one as reference. This is required
in order to grant the 10mm distance between CentOS word and
relase number. The same is true for brands begining with a
non-numeric letter (e.g., the Art brand), in these cases we use
the starting letter to align the word instead.