fixed window clearing code and styled window background to hide slot UI. Fixed border CSS. Fixes #154, fixes # 155, fixes #156, fixes #158
Fixed window clearing code and styled window background to hide slot UI. Fixed border CSS. Fixes #154, fixes #155, fixes #156, fixes #158
Fixed window clearing code and styled window background to hide slot UI. Fixed border CSS. Fixes #154, fixes #155, fixes #156, fixes #158
Merge pull request #163 from IIIF/slot-bug-cleanup#154-156-158

fixed window clearing code and styled window background to hide slot UI....