Merge branch 'master' into rtl_via_css_flip

Conflicts:
	docs/assets/js/raw-files.min.js

docs/_includes/customizer-variables.html

@@ -1352,6 +1352,14 @@
     <label for="input-@panel-body-padding">@panel-body-padding</label>
     <input id="input-@panel-body-padding" type="text" value="15px" data-var="@panel-body-padding" class="form-control"/>
   </div>
+  <div class="bs-customizer-input">
+    <label for="input-@panel-heading-padding">@panel-heading-padding</label>
+    <input id="input-@panel-heading-padding" type="text" value="10px 15px" data-var="@panel-heading-padding" class="form-control"/>
+  </div>
+  <div class="bs-customizer-input">
+    <label for="input-@panel-footer-padding">@panel-footer-padding</label>
+    <input id="input-@panel-footer-padding" type="text" value="@panel-heading-padding" data-var="@panel-footer-padding" class="form-control"/>
+  </div>
   <div class="bs-customizer-input">
     <label for="input-@panel-border-radius">@panel-border-radius</label>
     <input id="input-@panel-border-radius" type="text" value="@border-radius-base" data-var="@panel-border-radius" class="form-control"/>