Allow user customization of title bar

[Xithrius]

Currently, the user is only able to enable/disable the title bar.

With this new feature, the user should be able to re-arrange/add/remove items such as the date, title, filter status, etc.

The config option should be in the format of a string.

An example could be something like %title% %date% %filter%.

[Xithrius]

This will be done soon, shouldn't be too much of a problem.