Changed development_steps, command_runs, and user_inputs models - we don't need to hash any data - we can just use it as is

pilot/database/models/user_inputs.py

@@ -7,7 +7,6 @@ from database.models.app import App
 class UserInputs(BaseModel):
     id = AutoField()
     app = ForeignKeyField(App, on_delete='CASCADE')
-    hash_id = CharField(null=False)
     query = TextField(null=True)
     user_input = TextField(null=True)
     previous_step = ForeignKeyField('self', null=True, column_name='previous_step')
@@ -16,5 +15,5 @@ class UserInputs(BaseModel):
     class Meta:
         db_table = 'user_inputs'
         indexes = (
-            (('app', 'hash_id'), True),
+            (('app', 'previous_step', 'high_level_step'), True),
         )