Add grunt.js build script

- Move Bootstrap LESS files into new subdirectory

- Change app.css to app.less, add @import's to utilize
Bootstrap variables and mixins

- Remove plugins.js and main.js

- Move Bootstrap JS plugins into new subdirectory

- Add new _main.js file with example DOM-based routing
script that works off the WordPress body_class

- lib/scripts.php has been updated to remove all extra
CSS and JS files and also places JavaScript in the footer

assets/css/less/bootstrap/grid.less

@@ -0,0 +1,21 @@
+//
+// Grid system
+// --------------------------------------------------
+
+
+// Fixed (940px)
+#grid > .core(@gridColumnWidth, @gridGutterWidth);
+
+// Fluid (940px)
+#grid > .fluid(@fluidGridColumnWidth, @fluidGridGutterWidth);
+
+// Reset utility classes due to specificity
+[class*="span"].hide,
+.row-fluid [class*="span"].hide {
+  display: none;
+}
+
+[class*="span"].pull-right,
+.row-fluid [class*="span"].pull-right {
+  float: right;
+}