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/button.html

@@ -3,49 +3,6 @@ title: Button
 layout: documentation
 doc-tab: elements
 doc-subtab: button
-variables:
-- name: $button-color
-  value: $grey-darker
-- name: $button-background-color
-  value: $white
-- name: $button-border-color
-  value: $grey-lighter
-- name: $button-hover-color
-  value: $link-hover
-- name: $button-hover-border-color
-  value: $link-hover-border
-- name: $button-focus-color
-  value: $link-focus
-- name: $button-focus-border-color
-  value: $link-focus-border
-- name: $button-focus-box-shadow-size
-  value: 0 0 0 0.125em
-- name: $button-focus-box-shadow-color
-  value: rgba($link, 0.25)
-- name: $button-active-color
-  value: $link-active
-- name: $button-active-border-color
-  value: $link-active-border
-- name: $button-link-color
-  value: $text
-- name: $button-link-hover-background-color
-  value: $background
-- name: $button-link-hover-color
-  value: $text-strong
-- name: $button-disabled-background-color
-  value: $white
-- name: $button-disabled-border-color
-  value: $grey-lighter
-- name: $button-disabled-shadow
-  value: none
-- name: $button-disabled-opacity
-  value: 0.5
-- name: $button-static-color
-  value: $grey
-- name: $button-static-background-color
-  value: $white-ter
-- name: $button-static-border-color
-  value: $grey-lighter
 ---
 
 {% capture button_example %}
@@ -615,7 +572,7 @@ variables:
 
     {% include snippet.html content=button_group_addons_example %}
 
-    {% include variables.html %}
+    {% include variables.html type='element' %}
 
   </div>
 </section>