PHP7: Fixed some E_WARNING errors that previously were E_STRICT

Aleksander Machniak

2015-08-07 36bd93f1384ccf3f3ccd6fa884ad594d1b486367

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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`);