Fix hidden "Remove" and "App info" buttons in landscape

On grouper the "Remove" and "App info" buttons are not visible if the device
is in landscape. Layout the children of the drag_target_bar vertically to
fix this.

Fixes: https://jira.cyanogenmod.org/browse/CYAN-3744

Before: http://i.imgur.com/SHMTUjK.png
After: http://i.imgur.com/4JeJi8k.png

Change-Id: Ie8a9a799fa89bf8ad233202da10c808ab65a66a9
Automatic translation import

Change-Id: I9cd58af458e1e1e83f8e079a353a2443d57a9780
Trebuchet Settings UI Refresh

- Overview Panel contains all Launcher Settings
  - Accessible through long press on Workspace or HW Menu button
  - Settings are held in a SlidingPanel in the Overview Panel
  - Replace the Settings shortcut in Overview Panel with Themes shortcut
  - Replace widgets icon with new widgets icon from Launcher3
- Trebuchet Settings changes no longer require restarting Process
- Transition Effects have PNG Sequence to show animation sequence
- Remove PageIndicator click event to open Overview Panel in AppTray

Contributors:
  Adrian Foulk - UX Lead
  Abishek Devkota - Project Manager
  Hayden Schoen - UX Designer

Change-Id: I2186213960cf12e840e814757894fe104551856b
Automatic translation import

Change-Id: I614b5765661973095a0fd6247df0e33c65edc68b
Trebuchet: Remove duplicate string

Change-Id: I5a1ed314ca05eb4771038c0e08c4695ed51b3f92
Trebuchet: Update default_workspace

  - Gmail has changed its className for its android.intent.category.LAUNCHER
    intent.

Change-Id: I34b1ab38696971fafb9d65fff5f3c5ce7c13eba7
Automatic translation import

Change-Id: I7a74a5756ed7c724ea8c4f2fbabf9c15a1484441