Rearrange and rename application routes.

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

tests/routes/applications/test_team.py

@@ -0,0 +1,14 @@
+from flask import url_for
+
+from tests.factories import PortfolioFactory, ApplicationFactory
+
+
+def test_application_team(client, user_session):
+    portfolio = PortfolioFactory.create()
+    application = ApplicationFactory.create(portfolio=portfolio)
+
+    user_session(portfolio.owner)
+
+    response = client.get(url_for("applications.team", application_id=application.id))
+
+    assert response.status_code == 200