fix SecurityHelper description

Fix typos

A couple of obvious typos here

fix assetconverter file extensions change only first time

Fix for UploadedFile

fix log messages collection

Fix unsupported flag in php 5.3.x environment [ArrayHelper::multisort]

Use AES-192 for encryption

ActiveRelation code style fix

Fixed VarDumper::dump for objects

Otherwise it throws an exception that "Object of class ClassName
could not be converted to string"

The cipher is already specified as string