A nice index alternative

The difference is that now we are only indexing applicants with skills,
it could be changed using a multi map, but it is uglier that the
previous approach.
Merge pull request #3 from andresmoschini/suggested-applicants

Fix Applicant_BySkills index
Merge pull request #4 from andresmoschini/suggested-applicant-alternative

Suggested applicant alternative
Made applicant names links to applicant detail screen.
Updating suggested employees on every change.
Notice if there are no applicants suggested.
Serializing requiredTechnicalSkills in URL standard format