update R code to set table owner to rw_grp on three tables

[leeevans]

clean.lu_pubmesh_tags
evidence.p2_drug_universe
translated.source

[ericaVoss]

Manually did CLEAN.LU_PUBMED_MESH_TAGS for now. My code looks like it is doing it but still wasn't set.

evidence.p2_drug_universe is not needed, ignore.

My code looks like is should handle this for translated.source. I can still try to figure out this issue.
ALTER TABLE translated.source OWNER TO RW_GRP;