Recent apps: Switch between Android- and Slim Recents, (1/2)

- Bring back the Android Recent Apps Screen:
  - Customizable Recents ram bar:
    - Modes
      ("Disabled", "Applications", "Applications and cache" ,"Applications, cache and other")
    - Colors
      (Applications, Cache, Other and Free ram)

  - Clear all button:
    - Position
      (Top left, Top right, Bottom left or Bottom right)
    - click: Clear all apps
    - Long click: Clear all appsand force clear caches, dentries and inodes

- Option to switch between SlimRoms Recent Apps Panel,
  and the default Android Recents Apps Screen on the fly