'Directory' module updates - Person Details (#14)
ARC updates for PeopleDetailsTableViewCell

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' module updates - Searching (#14)
Updates to PeopleSearchViewController
- Enable ARC
- Convert ivars to properties
- Switch to using literals and subscription

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' module updates - CoreData (#14)
Updates to PersonDetails entity
- ARC compatibility

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' module updates - Table Cells (#14)
- ARC compatibility
- Switch to literals and subscripting

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' module updates - Person Details (#14)
- Convert to ARC
- Replace ivars with properties
- Switch to subscripting and literals
- General cleanup

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' updates - module controller (#14)
- ARC updates

Signed-off-by: Blake Skinner <bskinner@mit.edu>
'Directory' updates - Data Controller  (#14)
- Enable ARC
- Switch to subscripting and literals

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Modernization updates to 'Directory' module. Fixes #14

Signed-off-by: Blake Skinner <bskinner@mit.edu>