- Mention that btrfs filesystems are only supported 'currently'.
- Clarify 'Free Space'. Explain how it actually works.
- Show '%' after the number in free space drop down. Also add 70%.
- Maintain the earlier order of showing timeline snapshots first and then
software snapshots. This is order of importance.
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>