Move step 4 to step 1

[samjam48]

We currently do all our building of files to deal with the database before building a database. The students understand how to create a database and this is an easy step to start with.

Before we have created the database we are referring to this non-existent thing during the current steps (1-3). We are asking the students to imagine something they haven't done and it makes the whole thing harder to grasp.

If we simply create the database at the start and save the 'url' it is very easy to imagine and explain this thing as it actually already exists. It would save a lot of back and forth and the students would do less copying of code in blind faith that it will hopefully make sense later.