Fix advanced preference layout issue

I am localizing the app in Italian and I found a little issue with the Advanced settings layout.

As it is right now, the labels (blur & dim) are in a `RelativeLayout` and their size is determined by the blur label size. This means that, if the dim label is longer (as is in Italian), the dim label gets cut and wraps to a new line.

I had to change the advanced preferences fragment layout include to using a `TableLayout`, and also added `lines='1'` attribute to the `TextView`s.