Initial commit for _sass.

Props @michaelArestad @hugobeta, and @jacklenox.

* Give prefix to variable files. This avoids confusion with files of similar names like typography. It also helps with the visual recognition over what file does what.
* Set up mixins-master.
* Setting foundation for encouraging in larger projects use of more than one mixing file. This creates a master mixins file that we can then bring subs into if the project grows.
* Fixed line breaks, spacing and new lines. Props @gregrickaby.
* Nest widget select. Props @gregrickaby.
* Make variables be variables-site. Makes this the global variables folder. People can then use sub folders in sections for local only variables.
* Change content directory to be site directory.
* Remove zip. Revert `style.css` to not be auto generated version.
* Fixes rem size issue on body font.
* Fixes for differences between `_s` and `_sass`. Fixed font sizes, added in display block to classes so they compile and the theme check
passes.
* Remove text domain and clean up css.

sass/forms/_fields.scss

@@ -0,0 +1,56 @@
+input[type="checkbox"],
+input[type="radio"] {
+	padding: 0; /* Addresses excess padding in IE8/9 */
+}
+
+input[type="search"] {
+	-webkit-appearance: textfield; /* Addresses appearance set to searchfield in S5, Chrome */
+	-webkit-box-sizing: content-box; /* Addresses box sizing set to border-box in S5, Chrome (include -moz to future-proof) */
+	-moz-box-sizing:    content-box;
+	box-sizing:         content-box;
+}
+
+input[type="search"]::-webkit-search-decoration { /* Corrects inner padding displayed oddly in S5, Chrome on OSX */
+	-webkit-appearance: none;
+}
+
+button::-moz-focus-inner,
+input::-moz-focus-inner { /* Corrects inner padding and border displayed oddly in FF3/4 www.sitepen.com/blog/2008/05/14/the-devils-in-the-details-fixing-dojos-toolbar-buttons/ */
+	border: 0;
+	padding: 0;
+}
+
+input[type="text"],
+input[type="email"],
+input[type="url"],
+input[type="password"],
+input[type="search"],
+textarea {
+	color: $color__text-input;
+	border: 1px solid $color__border-input;
+	@include border-radius(3px);
+}
+
+input[type="text"]:focus,
+input[type="email"]:focus,
+input[type="url"]:focus,
+input[type="password"]:focus,
+input[type="search"]:focus,
+textarea:focus {
+	color: $color__text-input-focus;
+}
+
+input[type="text"],
+input[type="email"],
+input[type="url"],
+input[type="password"],
+input[type="search"] {
+	padding: 3px;
+}
+
+textarea {
+	overflow: auto; /* Removes default vertical scrollbar in IE6/7/8/9 */
+	padding-left: 3px;
+	vertical-align: top; /* Improves readability and alignment in all browsers */
+	width: 100%;
+}