Blog: Sidebar and Meta Tag enhancements

[MelSumner]

• Added more content to the side bar
• added tags to blog posts: every post will have at least the year and the relevant Ember version
• added responsive: true if it wasn't already there (it is still an issue but we don't know why, someone will have to sit down and figure it out)
• moved the sidebar to the right (on smaller viewports, the sidebar moves below the content)
• updated the visual design for the sidebar

If merged, the current blog:

Would now become this:

[sivakumar-kailasam]

@MelSumner on mobile the regular blog pages seems fine. When viewing one of the tags, it seems like its lacking media queries on those pages.

All screenshots were taken on a pixel 2 xl,
https://ember-website-staging-pr-3280.herokuapp.com/blog/page/2/

https://ember-website-staging-pr-3280.herokuapp.com/blog/tags/2018.html

[MelSumner]

@sivakumar-kailasam thanks for catching that, I needed to update the tab.html.erb to more accurately reflect current design. 👍