Drag n Drop: Trim "only FASTA" error message.

Or was split on two lines.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Drag n Drop: Fast forward fade animation if user initiates drag again.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>