Revert "Fix qtip viewport overflow."

This reverts commit 44b4904814.

assets/js/app.coffee

@@ -20,7 +20,7 @@ class Choosealicense
   qtip_position:
     my: "top center"
     at: "bottom center"
-    viewport: $(window)
+
   # Annotation rule types as defined in `_config.yml`
   ruletypes:
     permissions: "Permission"

assets/vendor/qtip2/jquery.qtip.js

@@ -1924,7 +1924,7 @@ QTIP.defaults = {
 			mouse: TRUE,
 			scroll: TRUE,
 			resize: TRUE,
-			method: 'shift shift'
+			method: 'flipinvert flipinvert'
 		},
 		effect: function(api, pos, viewport) {
 			$(this).animate(pos, {