Add number and memory size formatting throughout the UI

This commit adds number formatting (thousands separator) to the baking panel. It also adds a new function to format memory sizes (KB/GB/etc) and applies it to the baking panel and scene stats. The new function is unit tested.

Reviewers: Severin
Tags: #user_interface
Differential Revision: https://developer.blender.org/D1248

release/scripts/startup/bl_ui/properties_data_modifier.py

@@ -328,7 +328,8 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
             row.prop(md, "delimit")
             layout_info = layout
 
-        layout_info.label(text=iface_("Faces: %d") % md.face_count, translate=False)
+        layout_info.label(text=iface_("Face Count: {:,}".format(md.face_count)),
+                     translate=False)
 
     def DISPLACE(self, layout, ob, md):
         has_texture = (md.texture is not None)