Bug 967795: Make updating the mobile subscribers DE a separate task.
Bug 967795: Make updating the mobile subscribers DE a separate task.

If the data-extension update fails the task will retry, and send another
SMS to the user. Moving this part to its own task means that both calls
will retry independently.

meandavejustice/basket,pmclanahan/basket,glogiotatidis/basket,glogiotatidis/basket,pmclanahan/basket,glogiotatidis/basket,meandavejustice/basket