Text optimization in <article>

Windows, and especially IE was having issues with text-shadow, causing text
to be less legible. Remove shadows, increase font-size, and darken color.

Also, use PressStart for font of article's title.
No generic else for file drop. Only cases for images and text.
Order posts by descending order to make most recent first.
New style for header.

Use flexbox to set all links to posts to a single row, filling the entire row.
Apply border, border-radius, and background. Raise up with shadow on
hover.

Align main title to center with slight glow.

Do not apply article img styles in footer.
Use pages class for gettings description, keywords, etc when they are set.

Do not perform separate query to get attributes for <head>. Instead, load
pages class early.

Check if($pages->description) to see if metadata is available, since pages
class will return a boolean false when trying to get data that is not set.
Correct typo. (used descriptions instead of description)