CC-3174 : showbuilder

adding a showbuilder form, can filter by show,
or if you're a host user by all shows you can schedule in a range.

airtime_mvc/public/css/showbuilder.css

@@ -1,5 +1,5 @@
 @CHARSET "UTF-8";
 
-#show_builder > input.input_text {
+#show_builder input.input_text {
     width:100px;
 }