CC-2651: import idicator

- Threshold is 10 seconds
- record timestamp once every 5 seconds
- "File import inprogress..." displays above search box
- pyinotify read_freq changed to 0.1 from 1

airtime_mvc/application/views/scripts/library/index.phtml

@@ -3,6 +3,7 @@
 	<!--<li><a href="#advancedSearch">Advanced Search</a></li>-->
 </ul>
 <div id="simpleSearch">
+    <div id="import_status" style="visibility:hidden">File import in progress...</div>
 	<table id="library_display" cellpadding="0" cellspacing="0" class="datatable">
 		<thead>
 			<tr>