Fix issue where the only KeyValue field in the tab would display its deleteButton

src/main/java/com/rohitawate/everest/controllers/DashboardController.java

@@ -147,7 +147,7 @@ public class DashboardController implements Initializable {
         httpMethodBox.getSelectionModel().select("GET");
 
         paramsControllers = new ArrayList<>();
-        paramsCountProperty = new SimpleIntegerProperty(paramsControllers.size());
+        paramsCountProperty = new SimpleIntegerProperty(0);
 
         appendedParams = new ArrayList<>();
         addParamField(); // Adds a blank param field
@@ -811,6 +811,7 @@ public class DashboardController implements Initializable {
             paramsControllers.clear();
 
         paramsBox.getChildren().clear();
+        paramsCountProperty.set(0);
         addParamField();
     }
 }

src/main/java/com/rohitawate/everest/controllers/FormDataTabController.java

@@ -51,10 +51,10 @@ public class FormDataTabController implements Initializable {
     @Override
     public void initialize(URL location, ResourceBundle resources) {
         stringControllers = new ArrayList<>();
-        stringControllersCount = new SimpleIntegerProperty(stringControllers.size());
+        stringControllersCount = new SimpleIntegerProperty(0);
 
         fileControllers = new ArrayList<>();
-        fileControllersCount = new SimpleIntegerProperty(fileControllers.size());
+        fileControllersCount = new SimpleIntegerProperty(0);
 
         addFileField();
         addStringField();
@@ -236,6 +236,10 @@ public class FormDataTabController implements Initializable {
             fileControllers.clear();
 
         fieldsBox.getChildren().clear();
+
+        stringControllersCount.set(0);
+        fileControllersCount.set(0);
+
         addStringField();
         addFileField();
     }

src/main/java/com/rohitawate/everest/controllers/HeaderTabController.java

@@ -49,7 +49,7 @@ public class HeaderTabController implements Initializable {
     @Override
     public void initialize(URL location, ResourceBundle resources) {
         controllers = new ArrayList<>();
-        controllersCount = new SimpleIntegerProperty(controllers.size());
+        controllersCount = new SimpleIntegerProperty(0);
         addHeader();
     }
 
@@ -141,6 +141,7 @@ public class HeaderTabController implements Initializable {
             controllers.clear();
 
         headersBox.getChildren().clear();
+        controllersCount.set(0);
         addHeader();
     }
 }

src/main/java/com/rohitawate/everest/controllers/URLTabController.java

@@ -142,6 +142,7 @@ public class URLTabController implements Initializable {
             controllers.clear();
 
         fieldsBox.getChildren().clear();
+        controllersCount.set(0);
         addField();
     }
 }