Better support for Microformats

[dharFr]

Hello 👋

This PR intent to improve support for microformat2 in the markup. I mostly ran the validator available on IndieWebify.Me (See "Publishing on the IndieWeb Level 2 / 1. Mark up your content" section) and followed instructions to fix/improve support.

Adds support for h-card on the home page, and h-entry in the post layout. More details bellow.

I did it for my own usage, and I guess it might be useful to other people as well.

Best ^^

1. Support for h-card on the home page

h-card is used to identify the website owner. I added support for the following microformats:

• h-card : Main container
• u-url : website URL (or links to other URL representing the person or organisation)
• p-name : organisation or person name
• u-email : email address
• u-logo : logo representing the person or organization
• p-note : additional notes (used with config.description)

2. Support for h-entry in the post layout

h-entry is used to identify blog posts. I added support for the following microformats:

• h-entry : Main container.
• p-name : post title
• u-url : permalink URL
• e-content : Content of the post
• dt-published : date published
• dt-updated : date updated
• p-author : Post author
• p-category for tags & categories

[probberechts]

Great work! Thanks.