Connects to #183. Connects to #191. Selection of all data files and Googe Analytics for tracking download requests.

[jimmyzhen]

Key Changes:

• Added documented config to allow users to select all files on Browse Data page when clicking on the checkbox in table header. Previously clicking on this checkbox only selects files shown on the current paginated page.
• Added Google Analytics to track individual file download requests when user clicks on the Download selected files button.
• Updated message displayed in the file download request modal.
• Removed code previously used for rendering individual data file download links in the modal. Upon the deployment and integration of the file download backend service, the prior implementation is no longer used.

Technical Notes:

To spin up a local instance, please do the following:

• Requires node.js v14.18.0 to build the app and run the tests.
• Running rm -fr node_modules/, rm yarn.lock,yarn install , and yarn sass sequentially upon cloning/pulling this branch.
• A .env file consisting of a number environment variables is also required at the root level. Reach out to me for details.
• Finally, run yarn start.

[cteng585]

• Clicking on the checkbox in the header to select all files for download works only if the checkbox is the first page of results. If the user changes to the any other page (e.g. 2nd page, 4th page, etc.) of results, the header checkbox doesn't appear to do anything. Additionally, checking the header checkbox on the first page DOES NOT check the header checkbox on subsequent pages.
• This is also the case if we select a data subset (e.g. Brown Adipose tissue)
• Changing the tissue filters unchecks any previously checked boxes, even if the new filters are a superset of the previous filter. To reproduce, select a tissue (e.g. Brown Adipose) and check some files to download. Then add another set of tissue (e.g. Adrenal). You should see that the previously selected files are now unselected. This is somewhat unintuitive.
• Previous code for rendering individual file downloads doesn't show up

[jimmyzhen]

@cteng585 Thank you for reviewing the PR. I've addressed the bug pertinent to the first bullet point in your comments as well as committed the change into the PR.

In regards to the third bullet point in your comments, given the plan to re-implement the file-browsing UIs with the rat figure diagram, I think it may make sense to hold off and see whether it will remain an issue after the overhaul.

[cteng585]

Everything looks great. Thanks for fixing the bug I mentioned in the first bullet.