Themes: Full support for PA GlobalActions dialogs + ancient derp fix

- Use Theme Engine UiContext for creating dialogs.
- Add theming to reboot confirm dialog(s), send UiContext to ShutdownThread aswell.
- Fix dialog not being recreated when calling showDialog() and dialog being not null is nullified
  without being recreated (we don't call handleShow() there).
  Introduced here https://gerrit.paranoidandroid.co/#/c/128/ but not affecting the final result,
  now we have Theme Engine tho we need it.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Update settings after recreating status bar.

This is needed to e.g. keep the circle battery after theme changes.

Change-Id: Id1eb23d19c8cbc33c4987a908382f4b5fe17cfd4
Keyguard: fix NPE setting lockscreen wallpaper

After boot the view might not be laid out and so getWidth() and
getHeight() return 0 and will cause a NullPointerException in
createBitmap().

Change-Id: Ibacf4199a69709dc34d21695732c2a5360533a23
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Fix frontOfTask assignment.

If all activities of a given stack were finishing, no activity was
marked as front-of-task. This confused ActivityManager, so make sure
there's always exactly one activity marked as front-of-task.

Change-Id: I087cbe10280d4a60aa5ccfaefe24a223523fb3f2
Themes: Use INSTALL_LOCATION_INTERNAL_ONLY for legacy icon packs

If an icon pack is currently applied and is installed using forward
locking, the system will crash when the pack is updated.  Several
applications can have the pack attached to their resources and this
causes the system to crash because it cannot unmount the asec container
to finish the post install process.  Installing these packs to internal
storage without forward locking alleviates this issue.

This is done with theme packs as well, including legacy themes.

Change-Id: I155fc0bd671f3f9baaf2565d1c4d654a0a5348dc
Theme IME switcher alert dialog

Change-Id: I5344e9ddbacb1520080532d9cc1a7a5f5428e131
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Activity chooser "Always" button is not working

When ResolverActivity is created with a custom list of matching
applications (rList) as in NFC case, and the alwaysUseOption is
set to true, the prferredActivity is not saved even if the user
presses the "always" button.

When a list is provided the variable mBaseResolveList will be
!= null. This will set mOrigResolveList = null.

When an activity is choosen and one of the buttons are pressed
onIntentSelected is called. The first thing this method does
is to check mAdapter.mOrigResolveList != null, however in this
case mOrigResolveList is always null, and the value is not
saved as PreferredActivity.

This problem was introduced in
6d8dfbd8149942f25f2b9643a12f1fb38f3be834.

Change-Id: I9eac41b7861b5e68ad3978af0dc0285f2a34eb88
Themes: Use first asset entry for lockscreen wallpaper

The current implementation assumes the wallpaper will be named
either wallpaper.png or wallpaper.jpg.  If this is not the case
the wallpaper is not applied.  This patch implements the lockscreen
wallpaper the same way that the regular wallpaper is done.

Change-Id: I9f3dd299c1e61158fa53c163f7e42e21e2f9b1dc
Themes: Use default_wallpaper for HOLO lockscreen wp

Change-Id: I9c7fd29c99d13e811993eb9b3b045010431ccad0