Added missing comma

Added a missing comma in this variable declaration.
Changed single quotes to double quotes

Had to change to double quotes to ensure that the apostrophe could be
used in “it’s”.
Changed double quotes to single quotes

Changes type of quote so “Sale Fever” in double quotes could be used.
Deleted call for random background colour

Removed this function call as directed to in comment.
Added hyphen to modify misspelled file name

The file name was spelled incorrectly.
Removed hyphen

Removed hyphen to fix misspelled file name
Fixed calculateCarValue funciton

Have fixed many things:
- carAge was taken from the scroll box so was NaN. Now an int is parsed
and only the number is taken.
- Modified operator in carAge check as ‘=‘ does not compare (‘==‘ does).
Fixed purchase rate

Purchase rate was calculating too high. Changed from 1000% to 10%. Also
it was misspelled throughout function.
Fixed Message of the Day

Message of the day now circulates between the three messages.
The startTimer() was deleted in index as it was not needed and meant
that the local function was being called not the one in the script file.
Fixed calculate Loan function

In index.html file the borrowTotal label was given a class attribute
when it should have been an id attribute.