Add Page Links to Blog Pagination

[SurajSanap]

Worked on Issue #349,

Changes:

1. Enclosed the pagination links within a
   with the class "pagination."
2. Checked if there are more than one page before rendering the pagination links.
3. Used {% if posts.paginator.num_pages > 1 %} to conditionally display pagination links.
4. Moved the existing pagination code into the new
   block.
5. Updated the first and last page links to include the correct page numbers.

Related Issue:
This pull request addresses Issue #349.

[thibaudcolas]

@SurajSanap I think there’s a fundamental misunderstanding about what #349 is about here? None of the changes you say you did will have any impact on the issue at hand, and the template you edited isn’t even actively used on the site.