Added more shortcuts

I can now switch between the full and compact footer.  I can also goto
the current song.

ocarina/components/entry.py

@@ -33,6 +33,12 @@ def key_press(widget, event):
 		LS.controls.next()
 	elif name == "s":
 		LS.controls.stop()
+	elif name == "u":
+		ocarina.footer.up_button()
+	elif name == "d":
+		ocarina.footer.down_button()
+	elif name == "g":
+		body.cur_page_goto()
 	elif name == "Right":
 		LS.controls.seek_forward()
 	elif name == "Left":