Added in postgres table locking.
Added in postgres table locking.

jamesfoley/cms,danielsamuels/cms,etianen/cms,dan-gamble/cms,lewiscollard/cms,jamesfoley/cms,dan-gamble/cms,lewiscollard/cms,lewiscollard/cms,etianen/cms,etianen/cms,jamesfoley/cms,danielsamuels/cms,danielsamuels/cms,jamesfoley/cms,dan-gamble/cms