Updating Thread View
Thread View Fix; Infinite Timer disable
ThreadDataSource is IEquatable

- ThreadDataSource implements IEquatable<ThreadDataSource>; two object
of this type will be equal if they possess the same thread id.
SALinkCommand can forward page URIs
ThreadSlideViewModel handles thread links
ThreadDetails Loads Pages after WebBrowser is ready
- Refactored Extensions.
- Made ThreadReplyRequest public.
- Created SendThreadResponseCommand class.
- ReplyControl now tightly coupled with its view model.
- Create ThreadDataSource instance from thread's id.
- Removed reply application bar property from thread details' view
model.
Thread Page History

- Thread Page History implemented.
- Users navigate pages of different threads with the back button.
- When the history is empty, users return to the Thread List / Home
Page.