Refactor user submission table's js

[int-y1]

JS's ngettext doesn't work in templates/, so move it to resources/.

i18n: python manage.py makemessages -l en -d djangojs detected all 5 i18n strings and put them in djangojs.po.

JS compatibility: The submission table works in IE11. (This required a lot of small changes)

[codecov-commenter]

Codecov Report

Merging #1954 (c745bd8) into master (966b37d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1954   +/-   ##
=======================================
  Coverage   46.46%   46.46%           
=======================================
  Files         236      236           
  Lines       13114    13114           
=======================================
  Hits         6093     6093           
  Misses       7021     7021           

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[kiritofeng]

I feel like "not working in IE" is totally fine (iirc MS is going to deprecate IE mode soon:tm:)

[int-y1]

I feel like "not working in IE" is totally fine (iirc MS is going to deprecate IE mode soon™️)

I did it to prevent fc25c65 from happening again.

[Xyene]

LGTM, thanks!