Bug 37403: Wrong progress quantity in job details

Bug 37403: Wrong progress quantity in job details

In fact the system adds a previous value to the progress. As if the system keeps a previous value and adds the correct count of records in addition.
This patch removes the previously stored value.

To test:
1. Go to Cataloging > Stage records for import
2. Choose a file with bibliographic records and click Upload file
3. In "Look for existing records in catalog?" choose a record matching rule (e.g. ISBN)
4. Click Stage for import
5. Click View detail of the enqueued job
   --> Progress show 2/1
6. Apply the patch
7. Repeat steps 1 to 4
8. Click View detail of the enqueued job
   --> Progress show 1/1

Signed-off-by: Roman Dolny <roman.dolny@jezuici.pl>
qa script:
Commit title does not start with 'Bug XXXXX: ' - d1bebb34d7

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Fixed patch subject line
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>