Functions reformat

[MrOinky]

Splits functions.py up into the utils folder so that functions are more organised.

The current structure is like so:

-utils
  -sql
    -db.py   - File for useful functions relating to the database e.g. backup functionality.
    -sql.py  - File for functions relating to interacting with the data inside the database.
  -checks.py - File for various different types of checks, e.g. role checks.
  -time.py   - File for useful functions for working with time,
  -utils.py  - File which serves a purpose like functions.py, where generic utilities reside which are not major enough to exist in their own file.

More files can be added in the future, the current files have only been created based off of what was previously in functions.py.

Closes #50