Add Recents apps styles, (1/2):

Thanks to CyanogenMod and SlimRoms

Included:

- 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