Fix Catalan keyboard layout

- Place "ç" (U+00E7) insteand of "ñ" (U+00F1).
- Place "L·L" (L/U+00B7/L) instead of "Ŀ" (U+013F) in more keys of
  "L".
- Add "·" (U+00B7) to more keys of "." in main keyboard and "-" in
  symbols keyboard.

Change-Id: I60e4aa6716f8166ca60ab5687b0faf2d84cd846b