Expose all email addresses in autocompletion

This change is immediately applicable to LDAP-based system address
books. However, personal SQL-based address books must have their quick
tables recreated. To do so, one must use sogo-tool to backup and restore
the user's data.

Resolves #3443, #3526

UI/WebServerResources/js/Contacts/Card.service.js

@@ -424,6 +424,27 @@
     return this.refs.length - 1;
   };
 
+  /**
+   * @function explode
+   * @memberof Card.prototype
+   * @desc Create a new Card associated to each email address of this card.
+   * @return an array of Card instances
+   */
+  Card.prototype.explode = function() {
+    var _this = this, cards = [], data;
+
+    if (this.emails.length > 1) {
+      data = this.$omit();
+      _.forEach(this.emails, function(email) {
+        var card = new Card(angular.extend({}, data, {emails: [email]}));
+        cards.push(card);
+      });
+      return cards;
+    }
+    else
+      return [this];
+  };
+
   /**
    * @function $reset
    * @memberof Card.prototype