Cache track instances in Browser.get{Edit,Sequence}Track.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Database checks for submission data.

Additionally, use the key "correction" instead of "curation" to denote
corrections to focal gene model.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
User dashboard: Add links so users can request cert or badge.

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