Templating and web contact tweaks

* The Google Analytics code, style sheets, all the `<meta>` tags, etc. now live in `templates/header.html`
* The logo lives in `templates/logo.html`
* The menu dropdown lives in `templates/menu.html`
* The opening `<html>` and doctypes (maybe just go with an HTML5 doctype? [http://www.w3schools.com/tags/tag_html.asp](http://www.w3schools.com/tags/tag_html.asp)) live in `templates/header_st.html`---because `<title>` needs to vary, and therefore, I couldn't go with a single header template without doing too much hackery. Because the current amount of hackery is just perfect.
* jQuery lives in `templates/header_inserts.html`
* The copyright lives in `templates/footer.html`

The interactive form is under `webcontact.html`, with `webcontact.php` driving the logic. It uses PHP's own `mail()`, which wraps over `sendmail`, which may or may not be already configured on your host.