Only non-sidecar files in the originals folder will be added to the
duplicates table to avoid side effects.
In addition, the duplicates table is cleaned before and after indexing.
Database column types are now UPPERCASE so that developers can easily recognize them. After upgrading to GORM 2.0, we can use generic types instead.
Signed-off-by: Michael Mayer <michael@liquidbytes.net>
