- add boldface for "viable" plus a note describing that this refers to the table having a primary key.  fixes #3398
- add boldface for "viable" plus a note describing that this
refers to the table having a primary key.  fixes #3398

davidfraser/sqlalchemy,bdupharm/sqlalchemy,ThiefMaster/sqlalchemy,WinterNis/sqlalchemy,wujuguang/sqlalchemy,robin900/sqlalchemy,276361270/sqlalchemy,Akrog/sqlalchemy,epa/sqlalchemy,itkovian/sqlalchemy,WinterNis/sqlalchemy,olemis/sqlalchemy,epa/sqlalchemy,olemis/sqlalchemy,wfxiang08/sqlalchemy,davidjb/sqlalchemy,EvaSDK/sqlalchemy,wujuguang/sqlalchemy,elelianghh/sqlalchemy,davidjb/sqlalchemy,wfxiang08/sqlalchemy,dstufft/sqlalchemy,276361270/sqlalchemy,inspirehep/sqlalchemy,robin900/sqlalchemy,EvaSDK/sqlalchemy,halfcrazy/sqlalchemy,monetate/sqlalchemy,davidfraser/sqlalchemy,bootandy/sqlalchemy,ThiefMaster/sqlalchemy,inspirehep/sqlalchemy,j5int/sqlalchemy,itkovian/sqlalchemy,Akrog/sqlalchemy,bootandy/sqlalchemy,halfcrazy/sqlalchemy,sqlalchemy/sqlalchemy,graingert/sqlalchemy,brianv0/sqlalchemy,bdupharm/sqlalchemy,hsum/sqlalchemy,hsum/sqlalchemy,j5int/sqlalchemy,dstufft/sqlalchemy,brianv0/sqlalchemy,elelianghh/sqlalchemy,zzzeek/sqlalchemy,pdufour/sqlalchemy,sandan/sqlalchemy,graingert/sqlalchemy,pdufour/sqlalchemy,sandan/sqlalchemy,monetate/sqlalchemy