* fixes of error catching in posting comment

* function move to next step
feature: #12

src/components/tabs/CommentsTab.vue

@@ -89,8 +89,13 @@ export default {
         date: new Date()
       }
 
-      saveComment(comment)
-      this.$router.go()
+      saveComment(comment, this.contract.id)
+        .then(resp => {
+          this.$router.go()
+        })
+        .catch(error => {
+          this.$router.push('/error?message=' + error.message + '&code=' + error.code)
+        })
     }
   }
 }

src/components/tabs/ContractTab.vue

@@ -4,7 +4,8 @@
       <!-- Draw buttons by roles -->
       <button
         type="button"
-        class="inline-block px-6 mr-3 py-2.5 bg-green-500 text-white font-medium text-xs rounded shadow-md">
+        class="inline-block px-6 mr-3 py-2.5 bg-green-500 text-white font-medium text-xs rounded shadow-md"
+        @click="nextStep()">
         Nächstes Schritt
       </button>
       <button
@@ -111,12 +112,25 @@
   </div>
 </template>
 <script>
+import { moveToNextStep } from '../../service/ContractsService'
+
 export default {
   props: {
     contract: {
       type: Object,
       default: () => ({})
     }
+  },
+  methods: {
+    async nextStep() {
+      await moveToNextStep(this.contract.id)
+        .then(resp => {
+          this.$router.go()
+        })
+        .catch(error => {
+          this.$router.push('/error?message=' + error.message + '&code=' + error.code)
+        })
+    }
   }
 }
 </script>