Swagger-ui dist directory should be generate at build

[tzach]

As already captured in #3 the right way to build swagger-ui is to run

npm run-script build

which generate dist directory from src directory.
This process should be part of the build process, and the entire dist directory should be generated and not stored in the project git.

[tzach]

@amnonh can you please look into it?
This is blocking updates teh swagger-ui look for the new admin GUI