Avoid errors when contacts widget is missing (in derived skins for example)

Thomas Bruederli

2014-09-16 e1db66a4b46f38522f8faecf38d0c49035d9bd14

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-- Updates from version 0.8
 
ALTER TABLE `cache` DROP COLUMN `cache_id`;
ALTER TABLE `users` DROP COLUMN `alias`;
ALTER TABLE `identities` ADD INDEX `email_identities_index` (`email`, `del`);