Some tweaks to the look of posts

[Booodaness]

Changes

1. Post description, if present in front matter, is displayed below the post title.

2. Editors can be mentioned in front matter as a list:

   editor = ["<editor_1>" (, "<editor_2>", ...)]

If the post has editors, author should be declared in similar manner as a list (not as a string) for the site to build correctly.

Authors and editors are automatically displayed 'nicely' in the post metadata as,

  <author_1>, <author_2>, ... , edited by <editor_1>, <editor_2>, ...

3. Post categories are displayed alphabetically as tags below post metadata. These anchor to corresponding sections in category.html.

4. Post description and truncated post content are shown in post-cards.html.

Screenshots

1. Sample post

2. Homepage