fixed 2 x TODOs, can now add an existing face as a refimg, and I sped up the recent jobs page

TODO

@@ -1,13 +1,4 @@
 ### GENERAL
-    * recent jobs is slow, think its this 'sql':
-      jobs = Job.query.filter( Job.last_update >= (func.now() - func.cast(concat(settings.job_archive_age, 'DAYS'), INTERVAL)) ).order_by(Job.id.desc()).all()
-      I'm guessing remove the funcs and make the sql just grab last 50 or something simpler
-
-    * add a reference image from existing image, or even "replace? ref image with this one" <- new menu option
-        - started on this in both jscript and python
-            -- believe I should definitively add person id to jscript (so thats in files)
-            -- then pass that through the context menut to the route and update the DB
-
     * rm dups job should show progress bar
     * in viewer, there is no move button (maybe add one?)
     * consider doing duplicates before AI, and if there are say 100s+, then maybe pause the AI work

job.py

@@ -171,7 +171,9 @@ def jobs():
         jobs = Job.query.order_by(Job.id.desc()).all() 
     else:
         page_title='Job list (recent)'
-        jobs = Job.query.filter( Job.last_update >= (func.now() - func.cast(concat(settings.job_archive_age, 'DAYS'), INTERVAL)) ).order_by(Job.id.desc()).all() 
+        # work out cutoff in python (used to do this in sql and it was too slow)
+        cutoff = datetime.now() - timedelta(days=settings.job_archive_age)
+        jobs = Job.query.filter( Job.last_update >= cutoff ).order_by(Job.id.desc()).all() 
     return render_template("jobs.html", jobs=jobs, page_title=page_title)