updates rnai screens and add external link icon
updates rnai screens and add external link icon



Former-commit-id: 1940822031a3631581de3c8dd9d82572cdc30b3a
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine