Several Bug Fixes and Improvements

- Correctly send server options like Mono vs. Color, etc.
- Fix Voxels As Points on startup
- handle case of too many local voxels more gracefully by using available free indices if there are some available
- handle moving behavior better in voxel server by dumping pending voxels that are out of view
- made VoxelStatsDialog no longer resize in crazy manner
- added "abandoned" VBO slots to the status display
- when flying forward, and LOD changes, don't discard WasInView voxels on server