[🚀 in site]: improve blogs section of the site

[ala-n]

It is proposed to do the following improvements for the navigation section of the blog articles:

1. Make the sidebar section sorting (for blogs only) descendant (from newest to oldest)
2. Limit the count of displayed blogs in the sidebar section to 10 latest
   2.1. Make sure that if the older blo is opened, the sidebar displays it anyway (as the 11th one)
3. "Show all" item text should be replaced with "Older articles..." (item should lead to the full list of articles as it is now)