MediaShareActivity: Create a method, displayMediaList, to handle display of media to be uploaded, and call the method in onCreate
media_share_activity_layout: Rename element photoListText to mediaListText
MediaShareActivity: Make imageData a private field, so that it is initialized once and is accessible in other methods
MediaShareActivity: When confirm button is clicked, retrieve file associated with URI and upload to Facebook user's default album
MediaShareActivity: Add javadoc for displayMediaList method
MediaShareActivity: Add javadoc for getFileForImageURI method
FacebookAccount: Add TODO about handling login and session problems