added dnd and xa strings
able to delete all messages for a given buddy
update model
Revert "update model"

This reverts commit edffcfd91195907e59d4f66091f332c8aa2405cf.
Revert "Revert "update model""

This reverts commit 27814b814612bbdbde092fac52d83fc06d14c945.
Status messsages showing chatview and updating