various autocomplete tweaks

* made limit for /api/internal/tag_list/complete optional (as this breaks the autocomplete on dbs with lots of tags)
* removed delay + minChars = 1 again (due to above change)
* first autocomplete tag is selected by default
* tab now works as a select button
* autocompleted tags will now be followed by a space (so the next tag can be instantly autocompleted)

lib/shimmie.js

@@ -8,16 +8,20 @@ $(document).ready(function() {
 	//TODO: Possibly move to using TextExtJS for autocomplete? - http://textextjs.com/
 	//      Also use autocomplete in tag box?
 	$('.autocomplete_tags').autocomplete(base_href + '/api/internal/tag_list/complete', {
-		width: 320,
-		max: 10,
-		highlight: false,
-		multiple: true,
-		multipleSeparator: ' ',
-		scroll: true,
-		scrollHeight: 300,
-		selectFirst: false,
+		//extraParams: {limit: 10},
 		queryParamName: 's',
-		delay: 150
+		minChars: 1,
+		delay: 0,
+		useCache: true,
+		maxCacheLength: 10,
+		matchInside: false,
+		selectFirst: true,
+		selectOnly: false,
+		preventDefaultReturn: 1,
+		preventDefaultTab: 1,
+		useDelimiter: true,
+		delimiterChar : " ",
+		delimiterKeyCode : 48
 	});
 
 	$("TABLE.sortable").tablesorter();