Revert PA work from master pending BravoChicken release.

Revert "If we dont decide this hashrocket stuff, Im going to cut someone"

This reverts commit dbc634ae31d583f5b692f722f5e31dfc21a597c0.

Revert "Removed PA test that was breaking on devise"

This reverts commit f014c4002b1b0d20d5f1af51a064c1d1056a9eab.

Revert "Merge branch 'public_activity'"

This reverts commit e13de396d6dfc4f223788685e749c1888889ce23, reversing
changes made to eac9d157b4bdf9a31a3bc96a45ba11dbb161052c.