Ana fixes

[atgonzalezz]

• Update team members information and open positions links
• Fix typos
• Add newsletter and hiring links to blog post
• Add picture to blog template
• Change elements order at the end of a blog. Now comments are after list of recent posts

[jdcaballerov]

@atgonzalezz Please use this to remove the last two commits

https://stackoverflow.com/a/51400593

[atgonzalezz]

@atgonzalezz Please use this to remove the last two commits

https://stackoverflow.com/a/51400593

I deleted the last two commits. The last commit after force-pushed is to solve conflicts with the posts files.