wip for frontend workflow tests and refactoring

...s/server/servlets/api/install/InstallLastStepServlet.java

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

...ami/jams/server/servlets/general/ServerStatusServlet.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/config.js

...ver/src/main/resources/webapp/js/lib/countrySelect.min.js

jams-server/src/main/resources/webapp/js/new-password.js

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

...-server/src/main/resources/webapp/templates/ca-setup.html

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

...-server/src/main/resources/webapp/templates/contacts.html

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

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

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

.../main/resources/webapp/templates/identity-management.html

jams-server/src/main/resources/webapp/templates/login.jsp

...ver/src/main/resources/webapp/templates/new-password.html

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

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