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/elements/icon.html

@@ -6,16 +6,6 @@ mdi: true
 layout: documentation
 doc-tab: elements
 doc-subtab: icon
-variables:
-- name: $icon-dimensions
-  value: 1.5rem
-- name: $icon-dimensions-small
-  value: 1rem
-- name: $icon-dimensions-medium
-  value: 2rem
-- name: $icon-dimensions-large
-  value: 3rem
-
 ---
 
 {% capture icon_example %}
@@ -954,7 +944,7 @@ variables:
       </tbody>
     </table>
 
-    {% include variables.html %}
+    {% include variables.html type='element' %}
 
   </div>
 </section>