More icons. At last!
Adding .directory to gitignore.
Delete .directory
Various fixes
Chargen updates
Use the non-accumulation root's parent as the accumulation root

This relies on the non-accumulation root not being the skeleton root. I haven't
found an instance where this isn't the case.
Use a smaller static geometry size for interior cells
Fix actor stepping
Remove unused functions and parameters
Merge remote-tracking branch 'scrawl/master'
Merge remote-tracking branch 'kcat/misc-cleanup'
Merge remote-tracking branch 'sirherrbatka/icons-svg'

Conflicts:
	.gitignore
Refactored loading screen

 - Add loading progress for data files, global map, terrain
 - Refactored and improved cell loading progress
Renamed Terrain::Terrain to Terrain::World to make VC happy
Replaced log2 to make VC happy