GUI Improvements

Hy,

would be great to get more options to customize the GUI:

- let us choose to show/hide the moving circles that use a lot of gui space

- let us choose diferent sizes of the overall waveform, in rb the overall waveform is comperatively small

- let us show/hide/choose size of the way too big pad section this also uses a lot of gui space

- longer the beatgrid lines so they "touch" each other (like in serato or like on the middle rzx screen). this is more helpful for people that beatmatch by eyes