Added bottom Add/Remove bar.
Added "Plus" on header row (To add a recording).
No divider in expandablelist: To set project divider: in list_group/_rem
add to parent linearLayout: 
    android:divider="@drawable/group_divider"
    android:showDividers="middle"
    android:dividerPadding="5dp"
Merge branch 'sergio' into dev