Add fixes to results

- Handle out of order events by batching lines until all lines
  are present
  - In static mode, fetch pages of results until container is full
  and scroll bar appears (for scroll events related to pagination)

awx/ui/client/features/output/index.controller.js

@@ -114,7 +114,12 @@ function next () {
             }
 
             return shift()
-                .then(() => append(events));
+                .then(() => append(events))
+                .then(() => {
+                    if(scroll.isMissing()) {
+                        return next();
+                    }
+                });
         });
 }
 
@@ -193,6 +198,11 @@ function scrollHome () {
                 .then(() => {
                     scroll.resetScrollPosition();
                     scroll.resume();
+                })
+                .then(() => {
+                    if(scroll.isMissing()) {
+                        return next();
+                    }
                 });
         });
 }