Add index view for JobApplication controller.

Added index view and minor fixups for templates to adapt to routes.
Use brackets in link_to in JobApplicationPools controller.

Use brackets in all link_to so conform to same structure everywhere.
JobApplications controller adapted to account for nested routes. Fixes to redirects.

Use auto relationships methods when creating new child (JobApplication) objects.
Change notes column type to text in ApplicationTarget and Dossier models.
Update schema.
Remove unneeded migration.
Update schema.
Updated annotations after change of type of notes to text from string.
Added test for DELETE of job application in JobApplicationsController functional tests.