* [ADD] Added some user preferences like show optional actions and top navigation bar.
* [MOD] Updated German translation. Thanks to @wagnst and @ffflorian
* [MOD] Updated French translation. Thanks to jmrh, grandpas29 and julien
* [MOD] Fallback to plain passwords on forms when PKI is not available. It does not affect to the accounts.
* [FIX] Fixed language strings. Closes#147
* [FIX] Fixed master password changing issue that fails when no custom fields are defined.
* [FIX] Fixed redirection from 2FA page after login.
* [FIX] Fixed account main group saving.
* [ADD] Security enhancement for master password in session.
* [MOD] Minor UI tweaks.
* [MOD] Improved config handling.
* [MOD] Code cleaning.
* [FIX] Accounts' main group were not set when the user hadn't enough privileges.
* [FIX] Accounts restoration didn't restore the account's main group.
* [ADD] New log class for better action events handling.
* [ADD] New email class which uses Log class attributes for message composing.
* [ADD] New Request class for managing POST/GET requests.
* [MOD] Almost whole session vars are managed through Session class.
* [MOD] Minor fixes on templates
* [ADD] Abstract classes and interfaces for better code structure.
* [MOD] Actions handled as integers not strings and are consistent accross app modules.
* [MOD] Classes' names where modified. Namespaces where added for better handling.
* [ADD] Common exception class for the whole app.
* [ADD] New base file for app initialization.
* [MOD] Speed improvements.
