Reorder keys around the spacebar

This CL reorders keys around the spacebar.
- On phone's symbols and symbols shift layout, the comma key is moved
  to the left of the spacebar to aligned with main layout.
- On tablet's layout, the comma key is moved to the left of the
  spacebar on all layout to aligned with the same layout of
  phone's. Also the comma key has "settings" as more keys.
- In Arabic and Perisan, the comma key of tablet already has some more keys
  This CL remove "/" and add "settings" instead.

Bug: 15281451
Change-Id: I6e0e75e4d4abfb1f356e7499be91424c7c57c58b