Launcher3 : checkItemPlacement fixes

This patchset addresses two bugs :

1) Incorrect casting of key causes mismatches
2) On hotseat items 2 and above, the occupied hashmap is populated
with the CONTAINER_HOTSEAT key, however if its a new item and its required
cell is not already been taken, the code falls through to the workspace checks.
Make sure hotseat items are treated separately.

Change-Id: I3f22e46940f62a223453bd05314eae2a642c899a
Launcher3 : Enable cling for all devices

Don't limit cling to just phones

Change-Id: If5c1cf4ae39e5dbbac4b3d1a8d2620d365939252
Allow some customization in Launcher3

This patch allows a user to customize:
- Grid with and height
- Default homescreen position
- Visibility of the search bar

These items can be configured in a new Activity, which replaces the system
settings as target of the icon in overview mode.

Shortcomings:
- Bounds for cols, rows and defaultWorkspace may need to be adjusted
- When one of the values changes, the Launcher activity gets recreated
  completely.
- When searchbar is hidden, you also lose the visible hints for the
  remove/appInfo drop targets.

Change-Id: I5006d01f8a85e4daf3c3bb9a3dfb57c70e968878
Launcher3: add missing layout_width and height

fixes launcher3 fc on note 10.1

Change-Id: Id0d5b76d104c8e30041db9ba93f3267818cb758f
Launcher3 : Make priveleged app

Enable LOCAL_PRIVILEGED_MODULE for launcher.
This seems to be required to gain widget priveleges by default.

Change-Id: Iae2ce085129b39bcc3591ced5f7938d63cebf722
Launcher3: IT translation
by ale8530

PS: Removed non translatable string

Change-Id: I380c414a711623a555872d04fd75fa06edebfcc8
Launcher3: Fix overviewmode overlay

Currently pressing the menu key will cause the overview settings will appear
under the app draw. This allows the menu to only be created if in the workspace

Change-Id: I6c5b8e142f10d534a45d591573ad57c2dfd12c26
Launcher3: FR translation

PS2: correction

Change-Id: I2198b9992ad488da7e160ff36baeb196cee02946
Launcher3: SV translations

Change-Id: I258668079849eff9c6cd3e8707c1dcbed1c5a742