Add immediate field validation for the GUI tool for the following field: project name

[aadamv]

Current behavior: The project name is validated only if the user clicks the Generate button.

Expected behavior: When the user leaves the field, the project name must be validated for the following rule: Project name at least three characters. The validation message must be placed under the input field.

A possible solution for the validation:

(with less intense colors)
Colors must be defined in the property file.