[HOLD] 3 of 3: CRTool auto-save localStorage to server (WIP)

[nbucknor]

Allows Curriculum review sessions to be saved on the server alongside localStorage. This allows a person to continue working on a Curriculum Review from another device by using the same unique URL that contains a token id.

Note: This PR must be merged after PR: #404

Additions

• a localStorage wrapper class that handles storing values in localStorage and syncing those values to the server.
• additional unit tests for new localStorage wrapper class

Changes

• Replace embedded JavaScript from the crt-start.html with dedicated analytics.js and startPage.js files.

How to test this PR

1.

Screenshots

Notes and todos

-

Checklist

• [ ] PR has an informative and human-readable title
• [ ] Changes are limited to a single goal (no scope creep)
• [ ] Code follows the standards laid out in the CFPB development guidelines
• [ ] Future todos are captured in comments and/or tickets
• [ ] Project documentation has been updated

Front-end testing

Browser testing

Visually tested in the following supported browsers:

• [ ] Firefox
• [ ] Chrome
• [ ] Safari
• [ ] Edge 18 (the last Edge prior to it switching to Chromium)
• [ ] Internet Explorer 11 and 8 (via emulation in 11's dev tools)
• [ ] Safari on iOS
• [ ] Chrome on Android

Accessibility

• [ ] Keyboard friendly (navigable with tab, space, enter, arrow keys, etc.)
• [ ] Screen reader friendly
• [ ] Does not introduce new errors or warnings in WAVE

Other

• [ ] Is useable without CSS
• [ ] Is useable without JS
• [ ] Does not introduce new lint warnings
• [ ] Flexible from small to large screens