Rearrange and rename application routes.

- move application routes to their own Flask blueprint
- squash application routes to be resource-specific
- reorganize application routes

tests/domain/test_environment_roles.py

@@ -1,27 +0,0 @@
-import pytest
-
-from atst.domain.environment_roles import EnvironmentRoles
-from atst.domain.exceptions import NotFoundError
-
-from tests.factories import *
-
-
-def test_get_for_portfolio():
-    user = UserFactory.create()
-    portfolio = PortfolioFactory.create()
-    application = ApplicationFactory.create(portfolio=portfolio)
-    environment = EnvironmentFactory.create(application=application)
-    env_role = EnvironmentRoleFactory.create(
-        environment=environment, user=user, role="basic access"
-    )
-
-    assert (
-        EnvironmentRoles.get_for_portfolio(
-            user.id, environment.id, portfolio_id=portfolio.id
-        )
-        == env_role
-    )
-    with pytest.raises(NotFoundError):
-        EnvironmentRoles.get_for_portfolio(
-            user.id, environment.id, portfolio_id=application.id
-        )