[#13122] Added cancel button

[CameronMooreGit]

Fixes #13122 Account Request Form: Adding Cancel button

Outline of Solution

The solution to this problem involved adding a hyperlink that redirects the user from the instructor registration page to the home page. The hyperlink has the appearance of a button by using the btn class. I added a style to the submit button to include a margin-right 15px, making a clean-looking gap between the two buttons appear. See below for visual changes: 

[github-actions[bot]]

Hi @CameronMooreGit, thank you for your interest in contributing to TEAMMATES! However, your PR does not appear to follow our contribution guidelines:

• Title must start with the issue number the PR is fixing in square brackets, e.g. [#<issue-number>]

Please address the above before we proceed to review your PR.

[weiquu]

@CameronMooreGit do fix the failing tests. You can visit our documentation to find out more about how to update our snapshot tests. In addition, please don't use plain CSS styling in the components - you can use Bootstrap classes instead. This helps to keep our styling consistent