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/site/_site.scss

@@ -0,0 +1,16 @@
+// @import "layout/content-sidebar";
+// @import "layout/sidebar-content";
+/*--------------------------------------------------------------
+10.1 Posts and pages
+--------------------------------------------------------------*/
+@import "primary/posts-and-pages";
+
+/*--------------------------------------------------------------
+10.2 Asides
+--------------------------------------------------------------*/
+@import "primary/asides";
+
+/*--------------------------------------------------------------
+10.3 Comments
+--------------------------------------------------------------*/
+@import "primary/comments";

sass/site/primary/_asides.scss

@@ -0,0 +1,4 @@
+.blog .format-aside .entry-title,
+.archive .format-aside .entry-title {
+	display: none;
+}

sass/site/primary/_comments.scss

@@ -0,0 +1,6 @@
+.comment-content a {
+	word-wrap: break-word;
+}
+.bypostauthor {
+	display: block;
+}

sass/site/primary/_posts-and-pages.scss

@@ -0,0 +1,28 @@
+.sticky {
+	display: block;
+}
+
+.hentry {
+	margin: 0 0 1.5em;
+}
+
+.byline,
+.updated {
+	display: none;
+}
+
+.single .byline,
+.group-blog .byline {
+	display: inline;
+}
+
+.page-content,
+.entry-content,
+.entry-summary {
+	margin: 1.5em 0 0;
+}
+
+.page-links {
+	clear: both;
+	margin: 0 0 1.5em;
+}

sass/site/secondary/_widgets.scss

@@ -0,0 +1,13 @@
+.widget {
+	margin: 0 0 1.5em;
+
+	/* Make sure select elements fit in widgets */
+	select {
+		max-width: 100%;
+	}
+}
+
+/* Search widget */
+.widget_search .search-submit {
+	display: none;
+}