Updated local plugins to use a new contents directory structure

The new directory structure is as follows:

  articles/YYYY-MM-DD-title/index.md

Comments will retain their previous directory structure

  comments/title/count_uniqueid.md

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Fixed up the related posts plugin

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Updated contents directory structure to conform to new standards

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Touched up different parts of the stylesheet

- Fixed up different layout and structural issues including distortion
  of archives, uneven comment margins and padding as well as changing
  any inconsistent colors to one that matches the current blue design.

- Updated styles to allow for better readability in comments. Even
  comments now have unique styles for elements such as blockquotes, code
  snippets, and tables.

- Even comment user metadata has been aligned to the right.

- Syntax highlighting styles have been added.

Signed-off-by: Byron Sanchez <byron@hackbytes.com>