Reordering of Tracks doesn't reflect details

[NeoCoderMatrix86]

Describe the bug
If you move a track up or down inside a cuesheet, the track ist just moved inside the table, but properties like position, begin, end, length are not aligned properly. They stay the same as they were before.

To Reproduce
Steps to reproduce the behavior:

1. Have a cuesheet with 8 tracks
2. Select track on position 5 and move it up to the top
3. Track is on top, but begin, end, length are not on top

Expected behavior
Moving a track up or down should change begin, end, length.

• Fix behaviour of tracks
• Add buttons for moving to position x asking user for position