Move definition of Scribe glyphs to an array of objects

Move definition of Scribe glyphs to an array of objects

And loop over this with map() to generate a list of React elements.

This is instead of the previous list of literal React elements we had
before.

This doesn't have any immediate impact, but makes the glyph data
available if other code wants to access it in the future, (such as
code that is scoring a mini grid).