Feature making the QR-codes clickable

[denn4617]

Closes #270.
Added a feature which makes the QR-codes clickable. This makes it more convenient for mobile users, since they can't scan the QR. When clicking the QR-code a 'href' will redirect to the mobilepay query, which takes to parameters: username and amount.

[falkecarlsen]

Very nice, LGTM. Thanks!

[codecov-commenter]

Codecov Report

Merging #278 (5a00c68) into next (0860feb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             next     #278   +/-   ##
=======================================
  Coverage   82.98%   82.98%           
=======================================
  Files          31       31           
  Lines        2669     2669           
  Branches      189      189           
=======================================
  Hits         2215     2215           
  Misses        421      421           
  Partials       33       33           

Impacted Files	Coverage Δ
stregsystem/views.py	56.71% <ø> (ø)

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[hrjakobsen]

I may be nitpicking, but the PR seems to change formatting which isn't related to the PR. It would be prettier if that was in a separate commit or PR (+1 for Hacktoberfest as well).

[falkecarlsen]

I may be nitpicking, but the PR seems to change formatting which isn't related to the PR. It would be prettier if that was in a separate commit or PR (+1 for Hacktoberfest as well).

You're right but we don't have code-style rules for HTML (yet), so it effectively doesn't matter. If @denn4617 wants to pump their PRs, they are welcome to revert the style changes and do them in another PR.
@denn4617, let me know - then I'll hold off on deploying this :)

[hrjakobsen]

but we don't have code-style rules for HTML (yet)

I would love to have an automated style guide, but I don't know of any tool that can handle the Django template language since it essentially allows for arbitrary Django everywhere in the HTML. At least the popular prettier doesn't support it prettier/prettier#5581