Docs/variables data (#1314)

* Replace variables.json with colors.json and update related files accordingly

* Add variables data files

* Update variables include template and all related files to use new variables data

* Fix mobile breakpoint id typo in responsivness docs page

* Fix Liquid syntax error in made-with-bulma docs page

* Update bulma sass files count in modular docs page

* Use breakpoints data in responsiveness helpers docs page

* Use breakpoints and variables data in typography helpers docs page

* Add missing page titles in docs pages front matter

docs/documentation/layout/section.html

@@ -3,13 +3,6 @@ title: Section
 layout: documentation
 doc-tab: layout
 doc-subtab: section
-variables:
-- name: $section-padding
-  value: 3rem 1.5rem
-- name: $section-padding-medium
-  value: 9rem 1.5rem
-- name: $section-padding-large
-  value: 18rem 1.5rem
 ---
 
 {% include subnav-layout.html %}
@@ -44,7 +37,7 @@ variables:
       <p>You can use the modifiers <code>is-medium</code> and <code>is-large</code> to change the <strong>spacing</strong>.</p>
     </div>
 
-    {% include variables.html layout=true %}
+    {% include variables.html %}
 
   </div>
 </section>