Updating Bootstrap to v.2.0.0

roots-actions.php:  added responsive css framework file
roots-options.php: changed default css classes for bootstrap v2.0.0
roots-scripts.php: updated less to v1.2.1, changed the load order and
added new scripts for bootstrap v2.0.0

Added all of the new css, js, less asset files and updated all of the
previous ones for bootstrap v2.0.0

css/bootstrap/lib/accordion.less

@@ -0,0 +1,28 @@
+// ACCORDION
+// ---------
+
+
+// Parent container
+.accordion {
+  margin-bottom: @baseLineHeight;
+}
+
+// Group == heading + body
+.accordion-group {
+  margin-bottom: 2px;
+  border: 1px solid #e5e5e5;
+  .border-radius(4px);
+}
+.accordion-heading {
+  border-bottom: 0;
+}
+.accordion-heading .accordion-toggle {
+  display: block;
+  padding: 8px 15px;
+}
+
+// Inner needs the styles because you can't animate properly with any styles on the element
+.accordion-inner {
+  padding: 9px 15px;
+  border-top: 1px solid #e5e5e5;
+}