fourth "minifont" text font to hp-prime.

[compsystems]

some symbols seem to require at least 12 * 12 pixels to be displayed, but the languages that have Latin/roman characters, if we can have text font of less than 12 * 12 pxls and is even perfectly readable 6 * 6 pixels, I think that if the calculator is selected a language with Latin characters, then allow to have very mini fonts at least 11 * 11, 10 * 10, 9 * 8 pxls on history view