Resolve "Change optional Analyses Overview to auto-comments"

Description

Implements two issues, they're so related that it's much less work and safer to work on them together.

• Removes all analyses categorization code, including analyses-by-classified resource and views.
• Refactors some code to avoid duplication and make stuff cleaner.
• Adds a new postprocessor analysis_tag_all_classified.
• Also fixes #104 (closed) with a small fix, reusing the new load_analyses() code so same analysis data is loaded everywhere in the Overview.

Related issues

#188 (closed) #178 (closed) #104 (closed)

Notes to review (code/docs/QA)

• e2e tests changed due to now using different variants for the tests (since a lot of variants previously came from not started analyses).
• Please give feedback on postprocessor name

Tests

General

• Tests have been added that prove my fix is effective or that my feature works
• Related tests have been modified/removed

Hypothesis testing:

• Soak testing has been done
• Distribution between positive / negative cases has been checked

Database

• Includes changes to database schema
• Includes necessary database migrations

Configuration

• Includes changes to configuration
• Includes configuration migration instructions in documentation

Merge checklist

• Self-review of code has been performed.
• Feature review and validation against specification has been performed (if applicable). Apply label: QAdone
• Need for documentation has been evaluated and, if necessary, updated. Apply label: docsdone
• Code and implementation has been reviewed by other core developer (including any changes based on initial review). Apply label: code reviewdone

Closes #188 (closed) Closes #178 (closed) Closes #104 (closed)