* External storage download uses external files directory and not the SD card
to downloads while the description states otherwise. This is in-accurate and
thus dropped (See #985).
* Custom download path is broken which was implemented as a workaround for the
above (See #1003).
* Move downloads storage to internal files directory which is sandboxed and only
accessible to us.
Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>