Set the default tab on startup to "label"
Set the default tab on startup to "label"

So people can access `to_label` as the first thing.
Requested by one of the 4CORE admins

Testing done:
- launched the app
- label screen was shown first

shankari/e-mission-phone,shankari/e-mission-phone,e-mission/e-mission-phone,e-mission/e-mission-phone,shankari/e-mission-phone,shankari/e-mission-phone,e-mission/e-mission-phone,e-mission/e-mission-phone