Generate Donation Forms screen is now completed

[alaca]

Resolves #8

Description

This PR completes the Generate Donation Forms screen. Admin is now able to generate Donation Forms from Admin UI by specifying donation forms count, selecting a donation form template, and selecting to generate a random Donation goal and generate Terms & Conditions option.

Affects

Generate Donation Forms screen

Visuals

Pre-review Checklist

• [x] Acceptance criteria satisfied and marked in related issue
• [x] Relevant @since tags included in DocBlocks
• [x] Changes logged to the Unreleased section of CHANGELOG.md
• [x] Self Review of code and UX completed

Testing Instructions

1. Go to Donations -> Tools -> TestData -> Generate Donation Forms
2. Enter Donation Forms count and click on Generate button
3. Try to generate Donation Forms with multiple options enabled/disabled