[Android] Change subs download location

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Jun 18 18:02:58 2019 +0200| [cc6b74846815553b8d329d1866d9cb165401ee25] | committer: Geoffrey Métais

 Change subs download location

Download subs to media folder when possible.
Fix #881

> https://code.videolan.org/videolan/vlc-android/commit/cc6b74846815553b8d329d1866d9cb165401ee25
---

 .../dialogs/SubtitleDownloaderDialogFragment.kt    | 10 ++--
 .../gui/helpers/hf/StoragePermissionsDelegate.kt   |  1 -
 .../vlc/gui/helpers/hf/WriteExternalDelegate.kt    | 26 +++++-----
 vlc-android/src/org/videolan/vlc/util/FileUtils.kt | 28 +++++++---
 .../org/videolan/vlc/util/VLCDownloadManager.kt    | 59 +++++++++++++++-------
 5 files changed, 77 insertions(+), 47 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/cc6b74846815553b8d329d1866d9cb165401ee25