#3193, renames scroll to scrollContext for clarification internally, adds fits check

src/definitions/modules/sticky.js

@@ -223,8 +223,8 @@ $.fn.sticky = function(parameters) {
           },
           positions: function() {
             var
-              window = {
-                height: $window.height()
+              scrollContext = {
+                height : $scroll.height()
               },
               element = {
                 margin: {
@@ -241,24 +241,23 @@ $.fn.sticky = function(parameters) {
               },
               container = {
                 height: $container.outerHeight()
-              },
-              scroll
+              }
             ;
-            if(!module.is.standardScroll()) {
+            if( !module.is.standardScroll() ) {
               module.debug('Non-standard scroll. Removing scroll offset from element offset');
-              scroll = {
-                top  : $scroll.scrollTop(),
-                left : $scroll.scrollLeft()
-              }
-              element.offset.top  += scroll.top;
-              context.offset.top  += scroll.top;
-              element.offset.left += scroll.left;
-              context.offset.left += scroll.left;
+
+              scrollContext.top  = $scroll.scrollTop();
+              scrollContext.left = $scroll.scrollLeft();
+
+              element.offset.top  += scrollContext.top;
+              context.offset.top  += scrollContext.top;
+              element.offset.left += scrollContext.left;
+              context.offset.left += scrollContext.left;
             }
             module.cache = {
-              fits : ( element.height < window.height ),
-              window : {
-                height: window.height
+              fits : ( element.height < scrollContext.height ),
+              scrollContext : {
+                height : scrollContext.height
               },
               element: {
                 margin : element.margin,
@@ -318,9 +317,9 @@ $.fn.sticky = function(parameters) {
             scroll = scroll || $scroll.scrollTop();
             var
               element        = module.cache.element,
-              window         = module.cache.window,
+              scrollContext  = module.cache.scrollContext,
               delta          = module.get.scrollChange(scroll),
-              maxScroll      = (element.height - window.height + settings.offset),
+              maxScroll      = (element.height - scrollContext.height + settings.offset),
               elementScroll  = module.get.currentElementScroll(),
               possibleScroll = (elementScroll + delta)
             ;
@@ -438,14 +437,14 @@ $.fn.sticky = function(parameters) {
             cache          = module.cache,
             fits           = cache.fits,
             element        = cache.element,
-            window         = cache.window,
+            scrollContext  = cache.scrollContext,
             context        = cache.context,
             offset         = (module.is.bottom() && settings.pushing)
               ? settings.bottomOffset
               : settings.offset,
             scroll         = {
               top    : cachedPosition + offset,
-              bottom : cachedPosition + offset + window.height
+              bottom : cachedPosition + offset + scrollContext.height
             },
             direction      = module.get.direction(scroll.top),
             elementScroll  = (fits)