Don't back up contacts

Signed-off-by: Mark Knoop <johannes@brahms.leipzig>
Add captcha to calendar script.

Signed-off-by: Mark Knoop <johannes@brahms.leipzig>
Save contacts xml

Signed-off-by: Mark Knoop <johannes@brahms.leipzig>
Fix location bug

Signed-off-by: Mark Knoop <johannes@brahms.leipzig>