user: remove make local feature

we discussed a bit on what this does and it's confusing as it stands:

* Use case of this is lost in the realms of time
* Possible guess by is that it was to move users of different Cloudron to a central cloudron
* Currently, the design is a bit flawed because the make user local button doesn’t pin the user. The state is lost in next synchronization.
* Maybe, one should use export/import user for this use case
* Let’s disable this button for now, feature is not complete.

dashboard/src/translation/en.json

@@ -201,8 +201,7 @@
             "invitationTooltip": "Invite User",
             "setGhostTooltip": "Impersonate",
             "mailmanagerTooltip": "This user can manage users and mailboxes",
-            "count": "Total users: {{ count }}",
-            "makeLocalTooltip": "Make user local"
+            "count": "Total users: {{ count }}"
         },
         "groups": {
             "title": "Groups",
@@ -395,12 +394,6 @@
             "all": "All Users",
             "active": "Active Users",
             "inactive": "Inactive Users"
-        },
-        "makeLocalDialog": {
-            "title": "Make this user local",
-            "description": "This will migrate the user from the external directory to the Cloudron.",
-            "warning": "A password reset will be initiated to set a local password for this user.",
-            "submitAction": "Make local"
         }
     },
     "profile": {