Ensure that the application can start with a new database

This commit changes the NewDB function to run migrations before preparing
SQL statements.

models.go

@@ -262,6 +262,11 @@ var db *dbHandler
 
 func NewDB(database *sql.DB) *dbHandler {
 	handler := &dbHandler{db: sqlx.NewDb(database, "sqlite3")}
+	_, err := migrate.Exec(database, "sqlite3", migrations.Migrations(), migrate.Up)
+	if err != nil {
+		log.Panicf("running database migration failed: %v", err)
+	}
+
 	failedStatements := make([]string, 0)
 	for _, sqlStatement := range sqlStatements {
 		var stmt *sqlx.Stmt
@@ -276,10 +281,6 @@ func NewDB(database *sql.DB) *dbHandler {
 		log.Panicf("%d statements failed to prepare", len(failedStatements))
 	}
 
-	_, err := migrate.Exec(database, "sqlite3", migrations.Migrations(), migrate.Up)
-	if err != nil {
-		log.Panicf("running database migration failed: %v", err)
-	}
 	return handler
 }