Upgrade site and modules to Django 2.2. Remove and replace obsolete
functionality with current equivalents. Update requirements to latest
versions where possible. Remove unused dependencies.
Display attendee profile data in normal table without DataTables so
sorting is not applied, causing data to be confusing to read.
Include item quantity in attendee data report for accurate schwag packing.
Show applied vouchers on attendee registration admin page.
Add head title and page title to more areas.
Update the dashboard to show warning for empty categories and have
button to open voucher page.
Fix exception on attendee page when user does not have attendee object.
Allow the recipient on an invoice to be updated without creating a new invoice.
This allows fixing of mistakes easily, especially for when it is given to someone
else to pay and a new invoice would be confusing.
Add shirt types and sizes. Improve messaging about discounts.
Restyle ticket wizard and product category screens. Enable page titles
and messages. Update dashboard to hide raffle.
Enable inventory population for dev container.
Support so print can print only important text.
SVG modified to use display:inline/none based on overlay True/False and
a symlink to make it easy to change to a completely seperate svg if that
is not optimal.
SVG added layers to split text and graphic so graphics can be easily
hidden and printed.
Closes: #38
* Switch to showing the PNG version by default, as this reflects what
will actually be rendered and sent to the printer
* Include the greyscale filter
* Include the twemoji font we'll use for rendering the badges
* A TimeOrStockLimit limit can apply a limit to a whole category, or
to specific products
* This report was only counting the products directly listed
* Take advantage of the new all_products property to include the
products indirectly listed as well as those directly listed
It's common to need to query the fill list of products covered by a
Flag - whether directly, or by being in an included category.
Add an all_products property which does this.
* Add a greyscale filter to text for more accurate preview
* Always default to SVG preview as it's the most accurate (cairo
doesn't do a great job of handling custom fonts when it converts to
png/pdf)
* Always use roboto font.
* Undo some of the debugging done early in this series of patches
* Add ability for a user to preview their own badge
* Add a template for the LCA2018 badge
