People won't join the BG anymore, so we want to replace the JOIN BG banner with a JOIN a Batch banner. ToDo in this issues/PR 1. Remove "Builder has upgraded to BG" banner + logic on users profiles 2.

Currently, a notification shows to Builders in their profile (for users create in the last 30 days) Here, let's discuss if we want to do the same... or maybe since we are "breaking the link with BG" ...