Community Batch Imports: add links between "Pending Imports" and "New Imports" pages for easier navigation.

[ananyakaligal]

Closes #10154

What does this PR achieve?
This PR adds navigation links between the "Pending Imports" and "New Imports" pages for easier access. It enhances the user experience by providing direct links at the bottom of both pages, facilitating smoother transitions between the two sections.

Technical
Created a new Macro BatchImportNavigation.html to include the navigation links.
Updated the templates batch_import_view.html and batch_import_pending_view.html pages to include the new navigation menu via :macros.BatchImportNavigation().

Testing
Visit the "Pending Imports" page (/import/batch/pending) or "New Imports" page (/import/batch/new) and ensure there’s a navigation bar created for both the links.

Screenshot

Stakeholders
@RayBB, @scottbarnes

[RayBB]

@ananyakaligal at first glance this looks great.
Unfortunately, I'm having some issues with my local environment to test this that I can't debug now.
column "submitter" does not exist LINE 2: ...) AS comments, MIN(added_time) AS added_time, MAX(submitter)... ^

Perhaps @scottbarnes could review and merge as he's also worked on this feature? :)

[ananyakaligal]

@RayBB I encountered the same issue, and I even addressed it to you previously. My approach to this was by adding the 'Submitter' column to the database in my local environment. It worked perfectly fine after that.

[RayBB]

@ananyakaligal could you do me a favor and create a GitHub issue for this? We should add this column to the data auto loaded when someone creates a local insurance.