statusbar: Make statusbar height equal SYSFONT_HEIGHT

And size elements horizaontally based on SYSFONT_WIDTH

Unfortunately we need 16px icons to make 16px statusbar look right
but at least it _works_ properly now.

Also: all targets currently use 8-px SYSFONT, except some hosted bootloaders

Change-Id: I0cdf97e6ef47ec49693ef79667b200595b4fe075

apps/gui/statusbar.h

@@ -28,10 +28,6 @@
 #include "screen_access.h"
 #include "events.h"
 
-#define STATUSBAR_X_POS                         0
-#define STATUSBAR_Y_POS                         0 /* MUST be a multiple of 8 */
-#define STATUSBAR_HEIGHT                        8
-
 struct status_info {
     int battlevel;
     int batt_charge_step;