[Android] Hide load last playlist button if not available

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Thu Apr  9 16:10:41 2020 +0200| [08089573b56854bd14c309563dd0528a834b104e] | committer: Nicolas Pomepuy

Hide load last playlist button if not available

Fix #1254

> https://code.videolan.org/videolan/vlc-android/commit/08089573b56854bd14c309563dd0528a834b104e
---

 .../main/java/org/videolan/resources/Constants.kt  |  6 ++++++
 .../videolan/vlc/gui/audio/AudioBrowserFragment.kt |  3 ++-
 .../videolan/vlc/gui/video/VideoGridFragment.kt    | 24 ++++++++++++----------
 .../src/org/videolan/vlc/media/PlaylistManager.kt  |  8 ++++----
 4 files changed, 25 insertions(+), 16 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/08089573b56854bd14c309563dd0528a834b104e