Restructure Images Folder

[jperson1]

Restructure Images Folder

Issue: https://github.com/GSA-TTS/fac-team/issues/32

Future Image Management

Should be a little more simple! I've axed the date stamped folders for use in the collections files. They're a little tough to manage because there are lots of duplicated files.

1. Images should go in assets/img/, under whichever folder is most relevant.
2. Images that would be included in several pages, such as screenshots of the home and login screens, go in the assets/img/shared/ folder
   • Updating a shared image in-place (new image, same name and folder) will update it in all the relevant spots. For example, if Login ever changes their look, we can update just the one screenshot in shared/
3. When changing a file name or location, it should be updated in the relevant collections file.
   • These files have been updated to access img first, rather than their subfolder. So they can get to the shared folder.
   • walkthrough_01.png is now either shared/home_annotated.png or something like walkthrough/the_first_step.png

Changes:

1. Remove date stamped folders
2. Collections use more full path names, to allow accessing other folders
3. A new shared folder to help prevent duplicating images

As a bonus:

1. Removed extra whitespace on some collections
2. Removed an unused image (tabular_thing.png)
3. Removed an unused component (hero.png)
   • USWDS has their own version embedded in landing-page that we can reference if we ever need to

How to test:

1. Switch to this branch and run normally
2. Verify that the affected pages display the correct images:
   • Tribal
   • Submission guide
   • Access management