fixed various issues, still wip

...ami/jams/server/core/workflows/InstallationFinalizer.java

...jams/server/servlets/api/install/StartInstallServlet.java

jams-server/src/main/resources/webapp/js/api.js

jams-server/src/main/resources/webapp/js/auth.js

jams-server/src/main/resources/webapp/js/ca-setup.js

jams-server/src/main/resources/webapp/js/config.js

...erver/src/main/resources/webapp/js/identity-management.js

...-server/src/main/resources/webapp/js/server-parameters.js

jams-server/src/main/resources/webapp/js/signup.js

jams-server/src/main/resources/webapp/templates/config.html

...rc/main/resources/webapp/templates/server-parameters.html