Fixed autocomplete resetting if list didn't change

TODO

@@ -1,7 +1,6 @@
 This is transient file that lists functionalities to be implemented before
 first major release.
 
-- autocomplete: don't reset active item if suggestions stay the same
 - autocomplete: don't show items that are already used in tag list (unsure)
 - posts/upload: when adding multiple files, select first one, not last one
 - posts/upload: better hotkeys for going to next post

public_html/js/Controls/AutoCompleteInput.js

@@ -166,6 +166,7 @@ App.Controls.AutoCompleteInput = function($input) {
 	}
 
 	function updateResults(textToFind) {
+		var oldResults = results.slice();
 		var source = getSource();
 		var filter = getResultsFilter(textToFind);
 		results = _.filter(source, filter);
@@ -173,7 +174,9 @@ App.Controls.AutoCompleteInput = function($input) {
 			results = options.additionalFilter(results);
 		}
 		results = results.slice(0, options.maxResults);
-		activeResult = -1;
+		if (!_.isEqual(oldResults, results)) {
+			activeResult = -1;
+		}
 	}
 
 	function applyAutocomplete() {