Finish tab bar visual effects and related actions.
Finish basic tab bar functionalities.
Fix rotation issue.
Fix wrong setting of `phpconfBlackColor`.
Adding DLog macro.
Setup status bar.
Adding avatar placeholder.
Make UI tweak for iOS 8 changes in landscape mode (hiding of the system status bar).
Adding session related views and view controllers.
Add detail cell coordinator to controller the cell providing.
Add detail cell base class.
Complete the basic view about the session list.
Add basic HUD manager
Change naming from coordinator to manager.
Rename Coordinator to Manager
Add MBProgressHUD