Sort by date and size done.
duration of file done
rename activity
rename activity
Rename Activity and the class+ Design Show one note
Merge pull request #7 from capapas/modif_note

Modif note
make my recorder view scrollable
Merge pull request #8 from capapas/scrollable_recorder

make my recorder view scrollable
Use MediaController component
Merge pull request #9 from capapas/use_media_controller

Use MediaController component
resolve conflicts