convert the backup increment time to the local timezone, fixes #700

Duplicity gives times in UTC. We were assuming times were in local time.

CHANGELOG.md

@@ -6,6 +6,7 @@ In Development
 
 * Roundcube updated to version 1.1.4.
 * On multi-homed machines, Postfix now binds to the right network interface when sending outbound mail so that SPF checks on the receiving end will pass.
+* Backup times were displayed with the wrong time zone.
 
 v0.16 (January 30, 2016)
 ------------------------

management/backup.py

@@ -42,10 +42,10 @@ def reldate(date, ref, clip):
 	# Get duplicity collection status and parse for a list of backups.
 	def parse_line(line):
 		keys = line.strip().split()
-		date = dateutil.parser.parse(keys[1])
+		date = dateutil.parser.parse(keys[1]).astimezone(dateutil.tz.tzlocal())
 		return {
 			"date": keys[1],
-			"date_str": date.strftime("%x %X"),
+			"date_str": date.strftime("%x %X") + " " + now.tzname(),
 			"date_delta": reldate(date, now, "the future?"),
 			"full": keys[0] == "full",
 			"size": 0, # collection-status doesn't give us the size
@@ -120,7 +120,6 @@ def parse_line(line):
 			bak["deleted_in"] = deleted_in
 
 	return {
-		"tz": now.tzname(),
 		"backups": backups,
 	}
 

management/templates/system-backup.html

@@ -142,7 +142,7 @@ <h3>Available Backups</h3>
         var b = r.backups[i];
         var tr = $('<tr/>');
         if (b.full) tr.addClass("full-backup");
-        tr.append( $('<td/>').text(b.date_str + " " + r.tz) );
+        tr.append( $('<td/>').text(b.date_str) );
         tr.append( $('<td/>').text(b.date_delta + " ago") );
         tr.append( $('<td/>').text(b.full ? "full" : "increment") );
         tr.append( $('<td style="text-align: right"/>').text( nice_size(b.size)) );