Update 0.36

- Balanced DNA variation rates
- Implemented tooltips
- Implemented scrolling with mouse cursor on screen edges
- Camera rotation on edges requires now second button press if Explicit Camera Rotation is on
- Fixed pooled plant nodes not resetting material count, resulting in performance loss
- Fixed crash on loading due to initializing some consecutive nodes as root nodes
- Fixed plant cache management after all plants using cache entry are cut down
- Fixed not calculating cutting node count on cuttings from growing plants
- Fixed pooled plant nodes not resetting all flags on enable
- Fixed main menu sections not toggling off properly
- Fixed editing cuttings taken from growing plant