i18n catchup

[eyeseast]

Catching us up on all the i18n we've been skipping.

Closes #499

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[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	39.12%	2850 / 7284
🔵	Statements	39.12%	2850 / 7284
🔵	Functions	26.58%	42 / 158
🔵	Branches	47.92%	104 / 217

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/lib/components/common/FieldLabel.svelte	100%	33.33%	100%	100%
src/lib/components/common/Premium.svelte	100%	0%	100%	100%
src/lib/components/common/SignedIn.svelte	0%	0%	0%	0%	1-18
src/lib/components/documents/DocumentListItem.svelte	100%	50%	100%	100%
src/lib/components/documents/ResultsList.svelte	100%	18.18%	50%	100%
src/lib/components/forms/DocumentUpload.svelte	100%	11.11%	0%	100%
src/lib/components/inputs/AccessLevel.svelte	100%	100%	100%	100%
src/lib/components/inputs/Search.svelte	0%	0%	0%	0%	1-102
src/lib/components/layouts/MainLayout.svelte	0%	0%	0%	0%	1-252
src/lib/components/navigation/UserMenu.svelte	0%	0%	0%	0%	1-83
src/lib/components/projects/ProjectListItem.svelte	0%	0%	0%	0%	1-104
src/routes/app/+page.svelte	0%	0%	0%	0%	1-119
src/routes/app/add-ons/+page.svelte	0%	0%	0%	0%	1-131
src/routes/app/projects/+page.svelte	0%	0%	0%	0%	1-64
src/routes/app/projects/[id]-[slug]/+page.svelte	0%	0%	0%	0%	1-112
src/routes/app/sidebar/AddOns.svelte	0%	0%	0%	0%	1-38
src/routes/app/sidebar/Projects.svelte	0%	0%	0%	0%	1-50
src/routes/app/upload/+page.svelte	0%	0%	0%	0%	1-62

Generated in workflow #69

[allanlasser]

Thanks for going through this!