Remove undefined variables from exception handling

Bump version to v1.0.1

Load background_images_dir from config, fix #1

Update docs and deb

Add background functions

Adapt to web-greeter 3.4.0

Fix changelog

Revert "Remove version from changelog"

Remove version from changelog

Create new package version 0.8.7-1

Use the same box-shadow transparency value

Cleanup debug code

Fix package dependencies

Fix changelog date format

Fix version date