Changing texts in the comment boxes

1. Delete protein: explain why you would like to remove this protein. 2)Is mandatory>> mandatory.
2. Is optional >> optional.
3. add a new protein: There is a spelling mistake Uniprod>>> Uniprot.

assigned to @raghosh

mentioned in commit beb5a9d6

mentioned in commit a3b12aff

completed.

closed

mentioned in commit 27b4a490