fixed BUG-71 - size is lost from view details

BUGs

@@ -1,4 +1,4 @@
-### Next: 71
+### Next: 72
 BUG-56: when making a viewing list of AI:mich, (any search?) and going past the page_size, it gets the wrong data from the DB for the 'next' entry
 BUG-60: entries per page (in folders view) ignores pagesize, and this also contributes to BUG-56 I think
 BUG-61: in Fullscreen mode and next/prev dropped out of FS when calling /viewlist route
@@ -6,4 +6,3 @@ BUG-61: in Fullscreen mode and next/prev dropped out of FS when calling /viewlis
         -- then we can stay on-page, and stay in FS and then just call ViewImageOrVide()
 BUG-69: when moving a directory (maybe files???) it creates new destination directory even if one exists... not sure what the os.replace, etc. does at that point???
 BUG-70: when a dir is a match and a file is a match (common with our date-based matching), then we get 2 answers in the search
-BUG-71: from some views (view import details, then search) -> it loses the 'size' value and then barfs when putting an empty size val in the pa_prefs table

options.py

@@ -89,7 +89,9 @@ class Options(PA):
             self.how_many=request.form['how_many']
             self.offset=int(request.form['offset'])
             self.grouping=request.form['grouping']
-            self.size = request.form['size']
+            # this can be null if we come from view by details
+            if request.form['size']:
+                self.size = request.form['size']
             # seems html cant do boolean, but uses strings so convert
             if request.form['folders'] == "False":
                 self.folders=False
@@ -123,6 +125,7 @@ class Options(PA):
                 pref.st_offset=self.offset
                 pref.size=self.size
                 pref.folders=self.folders
+                # DDP: does this need to save changed preferences here???
 
             db.session.add(pref)
             db.session.commit()