Implemented the delete function for text elements

I18N Commander/UI WinForms/Components/TextElements.cs

@@ -102,9 +102,20 @@ public partial class TextElements : UserControl
         this.column.AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);
     }
 
-    private void buttonRemove_Click(object sender, EventArgs e)
+    private async void buttonRemove_Click(object sender, EventArgs e)
     {
+        if(this.DesignMode || this.currentTextElement is null)
+            return;
 
+        // Ask the user, if he really wants to remove the text element:
+        if(MessageBox.Show(this.currentTextElement.Translations.Count > 0 ? $"Are you sure, you want to remove the text element '{this.currentTextElement.Name}', its {this.currentTextElement.Translations.Count} translations and so on?" : $"Are you sure, you want to remove the text element '{this.currentTextElement.Name}'?", "Remove text element", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.No)
+            return;
+        
+        // Remove the text element1 from the database:
+        await TextElementProcessor.DeleteTextElement(this.currentTextElement.Id);
+
+        // Reload the data:
+        await this.LoadTextElements();
     }
     
     private async void buttonRename_Click(object sender, EventArgs e)