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"/>

less/panels.less

@@ -20,7 +20,7 @@
 
 // Optional heading
 .panel-heading {
-  padding: 10px 15px;
+  padding: @panel-heading-padding;
   border-bottom: 1px solid transparent;
   .border-top-radius((@panel-border-radius - 1));
 
@@ -43,7 +43,7 @@
 
 // Optional footer (stays gray in every modifier class)
 .panel-footer {
-  padding: 10px 15px;
+  padding: @panel-footer-padding;
   background-color: @panel-footer-bg;
   border-top: 1px solid @panel-inner-border;
   .border-bottom-radius((@panel-border-radius - 1));

less/variables.less

@@ -663,6 +663,8 @@
 
 @panel-bg:                    #fff;
 @panel-body-padding:          15px;
+@panel-heading-padding:       10px 15px;
+@panel-footer-padding:        @panel-heading-padding;
 @panel-border-radius:         @border-radius-base;
 
 //** Border color for elements within panels