fixes #4 - adds modular analyses system using plugins

app/models.py

@@ -135,8 +135,4 @@ class Scraper:
     
     def stop_scraping(self):
         self.scraping_active = False
-        logger.debug("Scraping stopped by user")
-
-def generate_statistics(df):
-    df['hour'] = df['timestamp'].dt.hour  # No need to convert timestamp again
-    return df.groupby('hour').size()  # Activity by hour
+        logger.debug("Scraping stopped by user")