Revert "bug#478, overlaybox layer test, debugging only"

This reverts commit 672c48a50dd957abffde5be8f0a524d8571f2456.
Revert "bug#478, force overlay box to be visible"

This reverts commit 753de7054b6d5919b30a72ff0428790cfc4a41a8.
Revert "bug#478, set pen for preview in default selection window"

This reverts commit 6622a7eb88570c8ed214a26d7497c70fa11bbf11.
bug#478, preview has no layer