move autocomplete js to script.js so it's cached

ext/autocomplete/script.js

@@ -0,0 +1,58 @@
+$(function(){
+	$('[name=search]').tagit({
+		singleFieldDelimiter: ' ',
+		beforeTagAdded: function(event, ui) {
+			// give special class to negative tags
+			if(ui.tagLabel[0] === '-') {
+				ui.tag.addClass('tag-negative');
+			}else{
+				ui.tag.addClass('tag-positive');
+			}
+		},
+		autocomplete : ({
+			source: function (request, response) {
+				var isNegative = (request.term[0] === '-');
+				$.ajax({
+					url: base_href + '/api/internal/autocomplete',
+					data: {'s': (isNegative ? request.term.substring(1) : request.term)},
+					dataType : 'json',
+					type : 'GET',
+					success : function (data) {
+						response($.map(data, function (item) {
+							item = (isNegative ? '-'+item : item);
+							return {
+								label : item,
+								value : item
+							}
+						}));
+					},
+					error : function (request, status, error) {
+						alert(error);
+					}
+				});
+			},
+			minLength: 1
+		})
+	});
+
+	$('.ui-autocomplete-input').keydown(function(e) {
+		var keyCode = e.keyCode || e.which;
+
+		//Stop tags containing space.
+		if(keyCode == 32) {
+			e.preventDefault();
+
+			$('[name=search]').tagit('createTag', $(this).val());
+			$(this).autocomplete('close');
+		} else if (keyCode == 9) {
+			e.preventDefault();
+
+			var tag = $('.tagit-autocomplete[style*=\"display: block\"] > li:first').text();
+			if(tag){
+				$('[name=search]').tagit('createTag', tag);
+				$('.ui-autocomplete-input').autocomplete('close');
+				$('.ui-autocomplete-input').val(''); //If tag already exists, make sure to remove duplicate.
+			}
+		}
+	});
+});