* Make tweaks to sponsor/player avatar exporting to replace invalid characters with underscores
- Also tweaked export to cascade down sponsors to find any valid sponsors over just checking once
- In addition to cascading, we also now export all found sponsor logos in order for a potential rotating sponsor feature in layouts
- Tweaked info files in sponsor_logo and player_avatar folders to identify what will get replaced when checking
* Remove replacing spaces and update README files for folders to be correct
af4e1f0d0d