fix: date and datetime regression (#282)

* use custom types.Date implementation

* fix user registration bug

* remove sanity check

* fix datetime bug

backend/app/api/handlers/v1/v1_ctrl_user.go

@@ -1,6 +1,7 @@
 package v1
 
 import (
+	"fmt"
 	"net/http"
 
 	"github.com/google/uuid"
@@ -28,7 +29,7 @@ func (ctrl *V1Controller) HandleUserRegistration() server.HandlerFunc {
 		}
 
 		if !ctrl.allowRegistration && regData.GroupToken == "" {
-			return validate.NewRequestError(nil, http.StatusForbidden)
+			return validate.NewRequestError(fmt.Errorf("user registration disabled"), http.StatusForbidden)
 		}
 
 		_, err := ctrl.svc.User.RegisterUser(r.Context(), regData)

backend/app/api/static/docs/docs.go

@@ -1983,6 +1983,7 @@ const docTemplate = `{
                     "type": "string"
                 },
                 "warrantyExpires": {
+                    "description": "Sold",
                     "type": "string"
                 }
             }

backend/app/api/static/docs/swagger.json

@@ -1975,6 +1975,7 @@
                     "type": "string"
                 },
                 "warrantyExpires": {
+                    "description": "Sold",
                     "type": "string"
                 }
             }

backend/app/api/static/docs/swagger.yaml

@@ -275,6 +275,7 @@ definitions:
       warrantyDetails:
         type: string
       warrantyExpires:
+        description: Sold
         type: string
     type: object
   repo.LabelCreate: