Revert "Added enable/disable for block_on_focus() and updated"

This reverts commit d00d9f566442870d78b37ec5b91cffadaf59f002.
exif: fix a c++ compiler warning.
cli: fix crash in cleanup
noise profile: fix scripts to import presets for testing.
general: rewrite of previously reverted patch

with complete coverage this time and more intuitive naming scheme.