Zero state on fields and templates when there is no field created on the Database

As a teacher 
I want to be aware of the need of creating fields before working on templates or any other database sections
so I can be guided on the right workflow to create a Database activity

The teacher should create fields manually or using a preset before navigating/working with templates or entries. Following prototype we could implement a new zero state page for this case to help and guide the teacher on the process.

• We should change the Fields page when there is no field created:

• We should change the Templates page when there is no field created and guide the user as in the main database page:

• We should change the existing 'Create a new field' drop-down component on Fields page to use the same as in the zero state.