Advisors: Refine Failed Checks view

As we're moving towards Advisors, our Failed Checks need to keep up towards a more concise view, namely:

• The current Failed Checks table should only show:
  • Service name;
  • Checks ( Critical / Major / Trivial);
  • DETAILS link (points to a new page: checks for a particular service ID).
• The new page, Failed Checks for a service ID, should have a table containing failed checks, showing:
  • Check name;
  • Check severity;
  • Check details (summary);
  • Actions (Silence, as we have now).
• The failed checks for the new page should be ordered by severity for now;
• Given we might have a large number of checks, results should be paginated.