Crawl config detail views

[SuaYoo]

WIP #89

• Adjust details in list view for improved readability
• New detail view page with configuration, schedule and crawl details

TODOs recorded here #100

Manual testing

1. Run app and go to crawl template list page. Click on a crawl template name, verify it takes you to the detail page
2. Choose or create a template with more than 3 seed URLs. Verify the detail view has a "show more" button that displays all the URLs
3. Click "Advanced Configuration". It should show the entire JSON config object
4. Scroll to "Crawls" section and click "Run now". Verify crawl starts

Screenshots

*Enhancements to last/next crawl detail in list view

New detail view

Expanded seeds

Expanded "Advanced Configuration"

Formatted schedule

Banner in detail view when crawl is running

Crawls section when no crawl is currently running

[ikreymer]

Looks great! Only suggestion is perhaps to add a 'Details' entry to the falafel menu, just in case user doesn't figure out clicking on the title (as i didn't initially, heh).
Can make a separate issue for the remaining todos.