changing options on files_*, search, also next/prev all now use POST->redirect model, so should allow back/forward browser buttons to work - commit so we can test in PROD

ai.py

@@ -94,14 +94,16 @@ def unmatched_faces():
     faces=Face.query.join(FaceFileLink).join(FaceRefimgLink, isouter=True).filter(FaceRefimgLink.refimg_id==None).order_by(Face.h.desc()).limit(10).all()
     imgs={}
     for face in faces:
-        face.locn=json.loads("["+face.locn+"]")
+        face.locn=json.loads(face.locn)
         f = Entry.query.join(File).join(FaceFileLink).filter(FaceFileLink.face_id==face.id).first() 
         face.file_eid=f.id
         face.url=f.FullPathOnFS()
-        x=face.locn[0][3]*0.95
-        y=face.locn[0][0]*0.95
-        x2=face.locn[0][1]*1.05
-        y2=face.locn[0][2]*1.05
+        x=face.locn[3]*0.95
+        y=face.locn[0]*0.95
+        x2=face.locn[1]*1.05
+        y2=face.locn[2]*1.05
+
+        print( f"l={face.locn}, x='{x}'" )
 
         im = Image.open(f.FullPathOnFS())
         region = im.crop((x, y, x2, y2))