Ovp-projects

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* Add lat and lng to address on Project retrieval

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* Add can_be_done_remotely to Work model

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* Include templates as package data

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* Fix mistyped template name
* Include test for project update

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* Allows project.image to be nullable while still being required(fix issue with mysql)
* Allows project.organization to be nullable while still being required(fix issue with mysql)
* Move models.py to separate files inside models/
* Update datetime module to django timezone module on models
* Remove id, details and organization from ProjectSearchSerializer and create ProjectRetrieveSerializer with such information
* Add ovp-users as dependency
* Rename Role model to VolunteerRole
* Implement Project.get_phone() and .get_email()
* Implement project edit route
* Implement roles, disponibility(work and job)
* Add permissions to create and edit project
* Upgrade to drf 3.5.3
* Create applies routes (create, remove and list)
* Add applied_count field to project
* Add project creation, publishing and closing, applying and unapplying
* Automatic slug on project creation
* Add close_finished_projects command
* Release as stable (YAY \o/)

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* Add organization to project model