Refactor UI imports and clean up unused code

- Removed unnecessary imports from various UI files to streamline the codebase.
- Deleted the unused documentation viewer implementation in `documentationview.py`.
- Cleaned up imports in `files.py` by removing `LOG_DIR` as it was not used.
- Removed the temporary script `temp.py` as it was no longer needed.

src/backend/delete_temp_contents.py

@@ -1,5 +1,4 @@
 import os
-from pathlib import Path
 from src import settings
 
 database = settings.database