Enhances localization and UI for customer and employee views

Updates customer detail tab with localized activity log label
Refactors salary specification page with improved button styles and actions
Adds localization support for customer activity log in Danish and English translations

Improves print and interaction experience for salary specification page

PlanTempus.Application/Features/Localization/Translations/da.json

@@ -622,6 +622,11 @@
       "noteType": "Note",
       "colorFormula": "Farveformel",
       "seeAllNotes": "Se alle noter →"
+    },
+    "detail": {
+      "tabs": {
+        "activitylog": "Aktivitetslog"
+      }
     }
   }
 }

PlanTempus.Application/Features/Localization/Translations/en.json

@@ -574,5 +574,12 @@
         "dailysummary": "Email with daily summary"
       }
     }
+  },
+  "customers": {
+    "detail": {
+      "tabs": {
+        "activitylog": "Activity log"
+      }
+    }
   }
 }