Lockscreen: Fix mdpi layout issues

Before: http://i.imgur.com/gXNUt97.png
After: http://i.imgur.com/ppevA6M.png

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I5bc893f12096d288d04d7cfa442b471002178a3a
Prevent Sym key from showing the IME picker

By default InputMethodManager will popup an IME picker when pressing
the Sym key.

This can be disabled by setting config_symKeyShowsImePicker to false in the
overlay (so the Sym key will show the symbol windows selector for ex.)

Ported from jellybean (was Change-Id: Id61e2d1d66babbb5bd15d7dcf280c1cb76bced46)
http://review.cyanogenmod.org/25787

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I5ee2542c081dca14d2e22724cc2616519716dd45

Conflicts:

	core/java/android/view/inputmethod/InputMethodManager.java
Externalize symbol picker options to resources

Having the symbol picker options in resources allows a change to be made for
a specific device, and even for a specific locale (change in overlay).

Ported from jellybean (was Change-Id: If39eafc7d0766d28ef6bee0ff61bf234a6654f38)

http://review.cyanogenmod.org/#/c/20626

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I72ff6fab6b9c14f9761904fdcc6918784d790d4d

Conflicts:

	core/res/res/values/strings.xml
	core/res/res/values/symbols.xml
IME : Fix sym key regression

http://review.cyanogenmod.org/#/c/25787/2 caused the "dismiss" arrow
for ime's to execute back action as well. Reproducible via :

Open sms app->Open message thread->Tap message field->Tap downward arrow on navbar

Expected behaviour : Keyboard should be dismissed
Actual behaviour : Keyboard is dismissed and user is taken to previous screen.

Change-Id: I6ab65b00464fb6e00849d7fd6c8bd438b23ee76b

Conflicts:

	core/java/android/view/inputmethod/InputMethodManager.java