Server: Basic highlighting for Warnings on embedded task log

packages/flamenco/src/styles/_app_base.sass

@@ -378,3 +378,8 @@ nav.sidebar
 
 	&:first-child
 		padding-top: 5px
+
+	&.log-warning
+		color: darken($color-warning, 25%)
+	&.log-error
+		color: $color-danger

packages/flamenco/src/templates/flamenco/tasks/view_task_log_embed.jade

@@ -41,3 +41,5 @@ script.
 		var url = $(this).attr('href');
 		getTaskLog(url, item_log);
 	});
+
+	$("p.item-log-line:contains('> Warning:')").addClass('log-warning');