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/da.json

@@ -271,12 +271,6 @@
             "failed": "Følgende brugere blev ikke importeret:",
             "sendInviteCheckbox": "Send en e-mail med invitation til importerede brugere"
         },
-        "makeLocalDialog": {
-            "description": "Dette vil migrere brugeren fra den eksterne mappe til Cloudron.",
-            "title": "Gør denne bruger lokal",
-            "warning": "En nulstilling af adgangskode vil blive iværksat for at indstille en lokal adgangskode for denne bruger.",
-            "submitAction": "Gør lokale"
-        },
         "title": "Brugerkatalog",
         "newUserAction": "Ny bruger",
         "users": {
@@ -296,7 +290,6 @@
             "invitationTooltip": "Inviter bruger",
             "mailmanagerTooltip": "Denne bruger kan administrere brugere og postkasser",
             "count": "Antal brugere i alt: {{ count }}",
-            "makeLocalTooltip": "Gør brugeren lokal",
             "setGhostTooltip": "Udgive sig for at være"
         },
         "groups": {