made popping text on index page fade in and out easier
added about page and modified folio pages
rearranged some CSS and comments
made dropcaps prettier
rearranged some HTML; added new background images
added `about.html` and updated 'folio' pages

TODO: fix content in `about.html`
updated TODO; minor CSS tweaks

TODO:
- SITE-WIDE: split messages (`.Msg`) from tags (`.Tag`)
- move "My Blogs" and "Copyright" sections, add acknowledgements section (!!!)
- find photo with Axel (!!)
- contact / software images into sprites (!)
updated 'punctuation' post
Merge branch 'dev-3_1_1' into dev-3_2_0

Conflicts:
	blog/semantic-punctuation.html
	core/styles/_mods.less
	core/styles/all.css