Fix numeric stats column wrapping in user sidebar

[Oaphi]

Closes #1590

I opted for a combination of using:

• fixed table layout;
• disabled wrapping for the stats column (always the right one);
• clipping the content of the stats column on overflow (with ellipsis);
• showing a toolitp with the full value on hover;

The above should be enough to address the issue and it also has an extra benefit of improving layout alignment across the sidebar:

The PR also comes with a bunch of other minor improvements (general view cleanup, several methods & helpers moving logic where it belongs - to models & helpers)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.28%. Comparing base (c1fed4f) to head (cbf0827).
Report is 8 commits behind head on develop.

Additional details and impacted files

Components	Coverage Δ
controllers	59.24% <ø> (ø)
helpers	68.22% <100.00%> (+0.14%)	⬆️
jobs	28.00% <ø> (ø)
models	80.09% <100.00%> (+0.09%)	⬆️

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[cellio]

LGTM. Thanks for moving SQL out of the view and into the model.

[cellio]

Can we get a review from someone who's more code-fluent than I am? It's not large and it would be nice to either get this fixed or identify anything that still needs to be done here. Thanks!