Added confirmation before deleting contacts. Asked in #1706

http://www.sogo.nu/bugs/view.php?id=1706
Merge pull request #11 from altxt/delete-confirm

Ask for confirmation before deleting contacts. Requested in bug #1706
Fix for #1706 - version bump
Fixed layout issues with showing the 'restart required' reminder in the address
book preferences

1) Aligned the reminder to the window left because showing it the second column
    (under sync interval dropdown) does not allow it enough space in some locales
2) Recalculate window size when showing the reminder
Added Russian translation
Percent-encode the addressbook URL so it can contain special and national characters

email addresses as usernames in the path section in particular