Adding docker login before container pull
Improtiving task conditional
Setting the default docker command to empty string
Restarting app if things change, not just stopping it

to make sure it plays nicely i.e. is fully stopped before starting
Ading `--rm` to default app upstart template
Updating requirements.txt
Revert "Adding docker login before container pull"

This reverts commit 60874b4a2996cdc52e4d6d05466d0ec5eb0451a1.

Conflicts:
	tasks/main.yml
Merge branch 'update-app-template' into add-docker-login
Merge pull request #3 from modcloth/add-docker-login

Minor changes