Popup z-index going way up #1668. Add z-index variable for modal

src/definitions/modules/modal.less

@@ -25,7 +25,7 @@
 .ui.modal {
   display: none;
   position: fixed;
-  z-index: 1001;
+  z-index: @zIndex;
 
   top: 50%;
   left: 50%;

src/definitions/modules/popup.js

@@ -103,18 +103,18 @@ $.fn.popup = function(parameters) {
 
         refresh: function() {
           if(settings.popup) {
-            $popup = $(settings.popup);
+            $popup = $(settings.popup).eq(0);
           }
           else {
             if(settings.inline) {
-              $popup = $target.next(selector.popup);
+              $popup = $target.next(selector.popup).eq(0);
             }
           }
           if(settings.popup) {
             $popup.addClass(className.loading);
             $offsetParent = module.get.offsetParent();
             $popup.removeClass(className.loading);
-            if(module.has.popup() && module.get.offsetParent($popup)[0] !== $offsetParent[0]) {
+            if(settings.movePopup && module.has.popup() && module.get.offsetParent($popup)[0] !== $offsetParent[0]) {
               module.debug('Moving popup to the same offset parent as activating element');
               $popup
                 .detach()
@@ -1087,6 +1087,7 @@ $.fn.popup.settings = {
   },
 
   setFluidWidth  : true,
+  movePopup      : true,
 
   target         : false,
   popup          : false,

src/definitions/modules/popup.less

@@ -18,6 +18,7 @@
 
 @import '../../theme.config';
 
+
 /*******************************
             Popup
 *******************************/
@@ -27,6 +28,10 @@
   position: absolute;
   top: 0px;
   right: 0px;
+
+  /* Fixes content being squished when inline (moz only) */
+  min-width: -moz-max-content;
+
   z-index: @zIndex;
 
   border: @border;

src/themes/default/modules/modal.variables

@@ -5,6 +5,7 @@
 @background: @white;
 @border: none;
 @width: 90%;
+@zIndex: 1001;
 @xOffset: -(@width / 2);
 @borderRadius: @defaultBorderRadius;
 @boxShadow: 0 1px 4px 1px rgba(0, 0, 0, 0.3);

src/themes/default/modules/popup.variables

@@ -6,7 +6,7 @@
        Element
 --------------------*/
 
-@zIndex: 900;
+@zIndex: 1900;
 @background: @white;
 
 @maxWidth: 250px;
@@ -60,8 +60,8 @@
        Coupling
 --------------------*/
 
-/* (padding * @medium) */
-@nestedGridMargin: -0.7rem -0.875rem;
+/* Grid Inside Popup */
+@nestedGridMargin: -0.7rem -0.875rem; /* (padding * @medium) */
 @nestedGridWidth: ~"calc(100% + 1.75rem)";
 
 /*-------------------