Make the popup more customizable

[zalesyc]

Added more options to the popover, some from #8

New:

• Created two styles for the text in the popup
  • One is the old way, where the text is cut and ends with an ellipsis
  • The other is that the text is scrolling, when too long
• Made the size of the text in the popup customizable
  • The size of the song's name is independent of the size of the author's name
• When the text is scrolling you can set the scrolling speed

Note:

The settings for the new options are not very polished and have many flaws, but i plan doing a settings redesign, so these are to just have something.