Route sheets report as PDF

[lamontfr]

Fixes #696.

Changes proposed in this pull request:

• delivery/views.py :
  • class RoutesInformation : generate and download pdf route sheets, create context only when displaying list of delivery routes, removed route sheet rendering as html for printing.
  • defineStyles() : refactored all reportlab paragraph styles.
  • class MultiRouteReport : generate pdf containing multiple route sheets.
  • drs_make_lines() : removed date because it was not used, ensured translation of component_group name.
• order/models.py : get_delivery_list() : ensured translation of component_group name.
• delivery/tests.py : adjusted tests for route sheets pdf printing to use attributes in response header instead of context, added test for multiple pages route sheets.
• delivery/fixtures/sample_data.json : added long delivery notes to test multiple pages route sheets.
• delivery/templates/routes_print.html : removed file because we now create a pdf instead.
• delivery/templates/routes.html : changed icon and tooltip to "download".

Status

• [X] READY

How to verify this change

• The goal is to verify the expected behavior of issue #696.
• Make sure that a route has enough orders today and long delivery notes such that it will require more than one page to print.
• Make sure that a route needs an odd number of pages to print such that a blank page will be inserted on the back side of the last sheet.
• Click on Kitchen count
• Generate orders for the day
• Click on step 4-Routes
• Click confirm and then save for each of the routes; the button label will be "organized"
• Click on the Route Sheets button; this will download a pdf file
• Open the pdf file and verify the contents and formatting, footer text and page skips.

[coveralls]

Coverage decreased (-0.01%) to 95.285% when pulling b20f43a60440dc15ef8d7c0e3241556223c39080 on lamontfr:fix696 into 8773a67fb9678cf7e168105ee9cf000a1a8d81ab on savoirfairelinux:dev.

[lingxiaoyang]

Great work, thank you!