renames app to test it on my phone without overwritting the released one
First draft of home screen
FIX IndexOutOfBoundsException in TrackQueue.get(clbk)

TrackQueue.requestTracks(trials): When the playlist comes to the end of its tracks and the server reloads it
with the same tracks, the mNextPtr is reset to 0.
Updates playlist db fields
FIX display of available playlists

Available remote playlists are now displayed in the "Available playlists" ListView in
SoloPlaylistsActivity.
But: onClickListener is not working. Clicking on a playlist causes a Force Close.
Refactoring of SherlockFragmentActivities in solo mode
FIX ClassCastException
FIX ClassCastException
Refactoring

Groups specific classes renamed with "Groups" prefix
New PlayerFragment superclass, aka UnisonPlayerFragment (not implemented for now)
FIX AndroidManifest
Clean up of the code

Removes unused imports, reformats some part of the code to satisfay checkstyle constraints.
Resolves conflict in strings.xml
First steps of PlayerFragment refoctorization
Refactorizes PlayerFragments
Cleans up the code

* Removes commented methods
* Updates javadoc
Merge branch 'dev/solo'
Refactorizes MainAcvities (in progress)
Partial refactorization of FragmentActivities

UnisonMainActivity is a specilization of UnisonFragmentActivity
Refactorizes FragmentActivities and MainActivities [end]

Refactoring concerns:
 * HomeActivity
 * SoloPlaylistActivity
 * GroupsMainActivity
 * SoloMainActivity
 * UnisonMainActivity
 * UnisonFragmentActivity

Organizes the import for the whole project (that's why so many files are updated,
but for most of them only the imports are changed).
Merge branch 'dev/solo'