Save customers

[enriquezrene]

In #78 we created a screen to manage all the customer information. We need to implement the required interaction with the back-end to create a new customer in the following way:

• User click on Add new customer button
• Project types section and Projects tab are disabled
• Tabs at the bottom of the screen are visible
• The user enters the name and description fields
• Click on save calls the API and project is saved
• Fields in the form are not reset, a message is displayed confirming a new customer have been saved
• Project types section and Projects tab are enabled

Acceptance Criteria

• All the new code implemented has at least 80% code coverage
• The interactions need to work as are detailed before