Created tests for new entities using phpspec, fixes T219

Summary:
- add phpspec to composer deps
- add tests for entities

Test Plan:
```
composer update
./bin/phpspec run
```

Reviewers: dkobia, rjmackay

Reviewed By: rjmackay

Subscribers: lkamau, eyedol

Maniphest Tasks: T219

Differential Revision: https://phabricator.ushahidi.com/D74