New samples

Added two new samples to SampleList: AnimatedActionItem and CustomTabs to help users understand how to use these custom features ABS can offer easier. AnimatedActionItem illustrates various animation that could be done on ActionBar items (including rotation, translation, scale and alpha). While CustomTabs shows how to implement three different types of indication for AB Tabs: customView (layout from res), text and icon and only icon.

Added javadoc for 4 classes in actionbarsherlock that were completely missing them. These include:
IcsToast.class
CapitalizingTextView.class
CapitalizingButton.class
MenuWrapper.class