Changes on PEBMED architecture proposal

[luisfernandezbr]

• ResultWrappers names
• Rename Repository entity to GitRepo
• Change app classes package
• Rename ViewState success variable name
• Remove LocalDataSource usage
• Error Handling conventions
• --- Stop transforming error on Domain Layer
• --- Stop using ERROR to send int status (Needs to use FullResultWrapper)
• UseCase structure
• POJO naming conventions
• DataSource naming conventions
• Change app packageId
• How to handle different ResultCodes