TwitterAppClient

• [x] Style the login screen for twitter
• [x] Pick a good Twitter launcher icon
• [x] Properly theme the ActionBar with correct text and background colors
• [x] Theme the tabs to fit a "twitter" color scheme
• [x] On compose screen, the "post" button should be customized (images or drawables) with a pressed state

• [x] Add inline "favorite" and "reply" icons to each tweet. Favorite icon should toggle when pressed.

  Walkthrough

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