v0.5.0

* Implemented automated backups locally
* Use [coveralls](https://coveralls.io/github/rust-keylock/rust-keylock-lib?branch=master)
* Fixed logging issues
* Fix: Exception in thread "JavaFX Application Thread" java.lang.NumberFormatException: For input string: ""
* Stop the inactivity timer after first time that the user is logged out because of inactivity
* Added Warning when about to overwrite an existing file while exporting locally
* The desctiprion of the password entries is now a text area