5. Bootstrap

Migrated all HTML pages to Bootstrap 5

4. Transactions

Implemented routes and frontend for 'transactions'

4.1. Routes

Move routes to separate files.

3. Categories

Created database, tests and HTLM pages for transaction categories

2. User CRUD operation

Added the user CRUD operations, including tests and frontend.

1. Initial release

Initial release with DB connection, 'users' backend and database tests.