Accomplished #6

Accomplished:
1. Login authentication
2. Capability to add to-do items
3. Capability to update to-do items to either: done, or cancelled
4. Admin account has user management system
5. Items not ticked off as done, or cancelled will be transferred to the
next day
6. Items older than 7 days will be purged from the database.

To be developed (optional):
1. View by month
2. View by week
3. Transfer to-do list item from one date to another
4. Make a list item recurring (with start, and end date; and frequency)