Improve html templates for admin pages

[Eg0ra]

Related to #68 and a few minor fixes)

Fix progress bar on changeview for ImportJob and ExportJob

Before:

After:

Improve celery-import-result page

• Add resources fields
• Fix autofill Format by file extension
• Add Totals section to celery import result

Before:

After:

Improve progress bar style (#72)

Light theme:

Dark theme:

Remove useless code

• Remove extra loop in celery-import-result template if errors in input file (Relates to import process crashes with invalid file (no errors reported) #74)

[coveralls]

Pull Request Test Coverage Report for Build 12045764197

Details

• 11 of 11 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 12023178983:	0.0%
Covered Lines:	1436
Relevant Lines:	1436

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💛 - Coveralls

[OttoAndrey]

Suggested change

	<progress max="100" id="progress-bar" data-url="{{ job_url }}" data-label={% trans "Waiting..." %}></progress>
	<progress max="100" id="progress-bar" data-url="{{ job_url }}" data-label={% translate "Waiting..." %}></progress>

So I guess this package will help https://github.com/adamchainz/djade in such cases

[NikAzanov]

I think we can leave trans as it is everywhere else in the project, and then add djade later