save projects using API

[enriquezrene]

The app has a UI to manage projects but it does not have any interaction with the API so we need to add the required code to actually save projects.

Acceptance Criteria

• ProjectService needs to make the proper request to the API
• Make sure the projects list is reloaded to show the list with the new projects added
• All the added code needs to have at least 80% code coverage
• File 'assets/project.json' needs to be removed since projects are going to be read using the API
• The following CURL command allows saving a project

curl -X POST "http://timetracker-api.azurewebsites.net/projects" -H "accept: application/json" -H "Content-Type: application/json" -d "{ \"name\": \"Time Tracker Xyz\", \"description\": \"Track working time for employees\", \"type\": \"CUSTOMER\"}"

• The following CURL command can be used to list all the existing projects

curl -X GET "http://timetracker-api.azurewebsites.net/projects" -H "accept: application/json"