Make blog and case studies pull logos from Projects CPT -> Landscape

[thetwopct]

• Single blog category posts now include logos of "mentioned" projects. I chose "mentioned" as "featured" to me meant that the post would be majority about them, and for example, this post, is not featuring Kubernetes but merely mentions it.
• Single case studies now use a similar project taxonomy look up
• Project logos have been removed from the theme (🎉)

I have added error_log reporting if any of the tags we use on blog posts don't return a project from the CPT. I believe there will be some mismatch/issues with different slug names, so lets keep watch of that after deployment and then remove it.

[cjyabraham]

I hope there will be no mismatches since the same procedure that keeps the project CPTs in sync with landscape also keeps the project taxonomy in sync. But, ya, let's keep an eye those logs.