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

Enrich the dictionary with many words generated from stems
extracted from the dictionary and rules written by hand.
This adds 45,619 words to the dictionary. Hopefully, almost none
of them is incorrect, though a lot are not very common.

Bug: 8010862
Change-Id: I51c7ebd16ff859ec1e765b0604dd1cfca159ab08

Change-Id: I2cba2bb5b2f449ed29895365b9c6ca285a7640fe

KeyboardAccessibilityDelegate.synthesizeTouchEvent() wrongly passed
pointer's id as a 6th argument of MotionEvent.obtain method that
should be metaState.

Change-Id: I822f9647a1ba27ee8cee39f373f6a1c003ebf665

Change-Id: I913ec290ddfd0ae4cc6e600ba95b7442167f0989

Change-Id: I0ef983f54e828193e9c7e4a10c888f72702d499c

Change-Id: Iffe895ca4827bb7e1addf1087c74c9023d2f130f
Auto-generated-cl: translation import

Change-Id: I5af9740ea071063bb48738abe258a61d7e06ddae
Auto-generated-cl: translation import

Change-Id: I4cbae476d16723778b46ff765dd97832f279785f

Bug: 14602663
Change-Id: Ie2060931df911b44230d5a5ba268f687cbdd0dc8

Bug: 12491371
Change-Id: I1f7feef707b95e8862db71cbc4f6f5585a2441dd

Bug: 13336905
Change-Id: Iefd117fa7b30b8ba240590b13b03d7044fd37ede

Bug: 12491371
Change-Id: Ib7ca91ae73aa40e45ea5f6d4e53348a261a4b823

Bug: 12491371
Change-Id: I3ce1e6557e41a94146b882751f75ae4b5f6bc73d

* commit '61a8a66c':
  Workaround to draw spacebar icon of emoji palettes

* commit 'ee4cc67e':
  Update shift key icon for LXX_Dark

Bug: 15321822
Change-Id: Iab7cef83ffdf91c877c3ed2e59d412496b516e1c

Bug: 15310025
Change-Id: I20bde50a2e751a5cd9871debd5ed1df0334c78e2

This fixes PunctuationTests#
testAutoCorrectionWithSingleQuotesAround.

Bug: 14119293
Bug: 15334309

Change-Id: I604c21a21e89a5fc431fd56ab7b6ad03f4736b01

* commit 'ba8836a9':
  Update action key backgrounds for LXX_Dark

* commit 'db2d6a20':
  Update enter and send icons for LXX_Dark

* commit '3d5a72eb':
  Update spacebar icon of LXX_Dark

Bug: 15295839
Change-Id: I77206c88c38a31193db97ce42c9d00fc25c7ff58

Bug: 15298065
Bug: 15327280
Change-Id: I4dfade1afe3578e29daba777567f81d4ec782956

This CL does't fix Bug: 15321822 though.

Bug: 15298065
Bug: 15321822
Change-Id: Ie6ab1e230c1657317dc06193da598f04f682f521

At 100k text, it's reasonably fast (less than 1s on latest hardware).

Bug: 12913404
Change-Id: I426b918b2610af24364934a1c37a7314f1142ad0

* commit '761a6812':
  Don't reuse main keyboard's spacebar icon for Emoji palette

Bug: 15321822
Change-Id: I6a5a865364fb98e0ebb6206d80d5629bbcb817b8

DEBUG in LatinIME has been changed by Ie52007dc to mean both
DebugSettings.PREF_DEBUG_MODE and Settings.PREF_KEY_IS_INTERNAL
instead of just DEBUG_MODE as used to be the case. Tests depend
on the debug mode to test many things and they make sure they run
in debug mode or they fail. This has tests understand the change in
policy.

Change-Id: Ie9f29e6a1d85e19704c8940d3fcf97c13c3dbaa6