Remove all frameworks except Bootstrap (#251)

- Remove all frameworks except Bootstrap

- Remove roots-options.php and replace with a more simple
  roots-config.php

- Include all Bootstrap Javascript plugins by default in
  js/plugins.js

- Use Bootstrap Responsive and Topbar navigation by default

- Use Bootstrap markup on forms, page titles, image galleries,
  alerts and errors, post and comment navigation

- Remove Roots styles from style.css and introduce app.css for
  site-specific CSS. Remove almost all previous default Roots
  styles.

- Add latest updates from H5BP project

css/less/pagination.less

@@ -0,0 +1,55 @@
+// PAGINATION
+// ----------
+
+.pagination {
+  height: @baseLineHeight * 2;
+  margin: @baseLineHeight 0;
+ }
+.pagination ul {
+  display: inline-block;
+  .ie7-inline-block();
+  margin-left: 0;
+  margin-bottom: 0;
+  .border-radius(3px);
+  .box-shadow(0 1px 2px rgba(0,0,0,.05));
+}
+.pagination li {
+    display: inline;
+  }
+.pagination a {
+  float: left;
+  padding: 0 14px;
+  line-height: (@baseLineHeight * 2) - 2;
+  text-decoration: none;
+  border: 1px solid #ddd;
+  border-left-width: 0;
+}
+.pagination a:hover,
+.pagination .active a {
+  background-color: #f5f5f5;
+}
+.pagination .active a {
+  color: @grayLight;
+  cursor: default;
+}
+.pagination .disabled a,
+.pagination .disabled a:hover {
+  color: @grayLight;
+  background-color: transparent;
+  cursor: default;
+}
+.pagination li:first-child a {
+  border-left-width: 1px;
+  .border-radius(3px 0 0 3px);
+}
+.pagination li:last-child a {
+  .border-radius(0 3px 3px 0);
+}
+
+// Centered
+.pagination-centered {
+  text-align: center;
+}
+.pagination-right {
+  text-align: right;
+}