Asap 222 admin page tweaks

[lkacenja]

Soon we are going to add more users to the APP for SLC. We have a bunch of folks from Georgia in the system. We'd like to enhance the user management interface to make it easier to maintain accounts.

This PR introduces:

• Pagination on the user page
• An email filter
• A few columns in the table like creation date and last sign in date
• Ability for admins to resend invitation emails
• Test coverage for the new features

• What additional steps are required to test this branch locally?

To test pagination, go to config/initializers/kaminari.rb and set config.default_per_page to a lower value like 1 or 2. This makes testing pagination easier.

• Are there any areas you would like extra review?

The new user UI pieces and potentially email resending on staging.

• Are there any rake tasks to run on production?

No

[lkacenja]

This test is unrelated. I must have forgotten to return it at some point in the past. 🤯

[4dh]

I am not seeing the pages numbers when changing pagination on the user management page- When set config.default_per_page = 1, I see one user, but no way to see second page. However, when I search for other user email, it does appear. The other image here is when set config.default_per_page = 2, with same user base. We now see 2 users (there are 3 though and not seeing how to get to pg 2).

I am using chrome browser

[lkacenja]

I am not seeing the pages numbers when changing pagination on the user management page- When set config.default_per_page = 1, I see one user, but no way to see second page. However, when I search for other user email, it does appear. The other image here is when set config.default_per_page = 2, with same user base. We now see 2 users (there are 3 though and not seeing how to get to pg 2). I am using chrome browser.

@4dh oof, I forgot that I hardcoded the pager not to show up with less than 25 items here. I did that so that the div with all the spacing and border would not appear all the time. This is a good catch. As of 26c66c2, I've changed that hardcoded value to read whatever is set in the Kaminari configuration. If you pull, I think (hope) the pager will show up now.

[4dh]

Everything working well and pagination is now visible with page numbers (see screenshot). I tested out with making 3 dummy users and setting config.default_per_page to 1 and 2.