Implemented logic in the process function to identify items labeled 'Contribute to this' and set the 'needs_contributions' field to True in the MilestoneItem model. This enhancement helps in easily identifying and handling items that require contributions on the roadmap.

…lay blog posts with multiple authors - Modify Blog Post template to handle multiple authors - Update Blog models to support multiple authors

This commit introduces enhancements to the Wagtail blog functionality to accommodate blog posts with multiple authors. The changes include adjustments to both templates and models.

1. **Blog Index Template Update:**
   - The Blog Index template (`patterns/pages/blog/blog_index_page.html`) has been updated to display blog posts that may have multiple authors. This ensures a clear presentation of posts in the listing.

2. **Blog Post Template Modification:**
   - The template used to display individual blog posts (`patterns/pages/blog/blog_page.html`) has been modified to handle multiple authors. The author information is now presented dynamically, allowing for a clean representation of each author.

3. **Blog Models Enhancement:**
   - The Blog models (`models.py`) have been enhanced to support multiple authors. A new model, `Author`, has been introduced, and the `BlogPage` model has been updated to include a `ManyToManyField` for authors. This allows associating multiple authors with a single blog post.

These changes aim to provide greater flexibility in managing and presenting blog posts with collaborative authorship.