Add selector for filelist parent dir button

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Refactor file list activity context menu options

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Refactoring and minor optimization in playlist name list

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Fix playlist sublist extraction index

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>