Added a styleguide.md file to refer back to.
Since voussoirkit is a library it feels better to have it below
the rest of the library and above the local project imports.
- common.css, removed html and body margins so that using
full height #content_body will not create a scrollbar.
Simplifies the "fill remaining space" construct I use a lot.
Added more css variables, I'm thinking about future theming.
- photo_card.css, slightly heightened to improve name clipping.
- clipboard.html, added a small screen mode.
- login.html, centered the boxes and fixed message area being
too small due to a previous change.
- search.html, simplified some conditional texts.
Applied wrapping to the description <pre>s,
removed some css that referred to nonexistent things,
move some element tags inside the {%if%} that fills the contents.
