Patch to make Z look more like X and Y on UltraLCD

Marlin/ultralcd.h

@@ -119,6 +119,7 @@ char *ftostr31ns(const float &x); // float to string without sign character
 char *ftostr31(const float &x);
 char *ftostr32(const float &x);
 char *ftostr12ns(const float &x); 
+char *ftostr32np(const float &x); // remove zero-padding from ftostr32
 char *ftostr5(const float &x);
 char *ftostr51(const float &x);
 char *ftostr52(const float &x);