A lot of changes, Fixing some bugs and a bit of performance

- Fixed a bug on which when you start playing a song in the main window
and the file is downloaded, doesn’t play.
- Fixed a bug on which when you add a song to the playlist in the main
window it doesn’t play because of a wrong url
- Added a new interface to switch between activities. To show up this
new interface, slide to left in the main window.
- I won’t use anymore library com.loopj.android.http
- Manage an IO error from media player
- Better background image for Player GUI (Graphical Player)
- Player GUI now changes its text colors and background image color
depending on the album art
- Minor changes to scrobbling system
- In Player GUI, Playlist design more simplified (Bug: only change one
row)
- Add library ResideMenu from  SpecialCyCi