cleaned-up authentication and reduced code bloat

...c/main/java/net/jami/jams/authmodule/TokenController.java

...tore/src/main/java/net/jami/datastore/main/DataStore.java

...n/java/net/jami/jams/common/objects/user/UserProfile.java

...jams/server/servlets/api/admin/devices/DeviceServlet.java

...ams/server/servlets/api/admin/devices/DevicesServlet.java

...r/servlets/api/admin/directory/DirectoryEntryServlet.java

...server/servlets/api/admin/update/SubscriptionServlet.java

.../jams/server/servlets/api/admin/update/UpdateServlet.java

...ami/jams/server/servlets/api/admin/users/UserServlet.java

...mi/jams/server/servlets/api/admin/users/UsersServlet.java

...i/jams/server/servlets/api/auth/device/DeviceServlet.java

...r/servlets/api/auth/directory/SearchDirectoryServlet.java

.../jami/jams/server/servlets/api/auth/user/UserServlet.java

.../server/servlets/api/install/CreateAuthSourceServlet.java

...ami/jams/server/servlets/api/install/CreateCAServlet.java

...ver/servlets/api/install/CreateServerSettingsServlet.java

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

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

...net/jami/jams/server/servlets/filters/AdminApiFilter.java

...java/net/jami/jams/server/servlets/filters/ApiFilter.java