feat: Add additional scan time options

- Add option to include file existence check at end of scan, speeds up
  end of scan operation time considerably, however if user has removed
  or moved files since starting a scan there could be later errors when
  interacting with results.  Defaults to existing behavior of including
  the check, until it can be verified later dialogs and actions handle
  non-existent items better.
- Add option to ignore differences in mtime when checking hash cache.
  Option is present in advanced tab of preferences.  Closes #1022.
- Regenerate pot files for translations

core/fs.py

@@ -100,11 +100,14 @@ class FilesDB:
     create_table_query = "CREATE TABLE IF NOT EXISTS files (path TEXT PRIMARY KEY, size INTEGER, mtime_ns INTEGER, entry_dt DATETIME, digest BLOB, digest_partial BLOB, digest_samples BLOB)"
     drop_table_query = "DROP TABLE IF EXISTS files;"
     select_query = "SELECT {key} FROM files WHERE path=:path AND size=:size and mtime_ns=:mtime_ns"
+    select_query_ignore_mtime = "SELECT {key} FROM files WHERE path=:path AND size=:size"
     insert_query = """
         INSERT INTO files (path, size, mtime_ns, entry_dt, {key}) VALUES (:path, :size, :mtime_ns, datetime('now'), :value)
         ON CONFLICT(path) DO UPDATE SET size=:size, mtime_ns=:mtime_ns, entry_dt=datetime('now'), {key}=:value;
     """
 
+    ignore_mtime = False
+
     def __init__(self):
         self.conn = None
         self.cur = None
@@ -146,9 +149,12 @@ class FilesDB:
         mtime_ns = stat.st_mtime_ns
         try:
             with self.lock:
-                self.cur.execute(
-                    self.select_query.format(key=key), {"path": str(path), "size": size, "mtime_ns": mtime_ns}
-                )
+                if self.ignore_mtime:
+                    self.cur.execute(self.select_query_ignore_mtime.format(key=key), {"path": str(path), "size": size})
+                else:
+                    self.cur.execute(
+                        self.select_query.format(key=key), {"path": str(path), "size": size, "mtime_ns": mtime_ns}
+                    )
                 result = self.cur.fetchone()
 
             if result: