Holodance V0.9.0b9: Music Library Fixes, Analytics Disabled

Full Release Notes

• Music Library: Fixed another issue that could cause caching to fail.
• Music Library: Random now immediately delivers 7 songs instead of just one.
• Music Library: May have fixed the issue that caused panes to go crazy after songs (disappearing, being stuck under the play area). This issue happened sporadically before, and I haven't done the "full big refactoring" that was supposed to fix this issue, yet ... but I may have found a single cause that triggered most of these issues, and if that really was it, it's now fixed.
• Removed Unity Analytics for now, to comply with GDPR. UT has released an opt-out plugin just today but I kind of doubt that this will work reliably for VR and I'm leaving for a vacation in just a few hours. Also disabled HW statistics.