Merge pull request #799 from deltachat/message_label_num_lines

set number of lines in fileviews titleview

deltachat-ios/MessageKit/Views/FileView.swift

@@ -10,6 +10,7 @@ class FileView: UIView {
     private lazy var titleView: MessageLabel = {
         let label = MessageLabel()
         label.translatesAutoresizingMaskIntoConstraints = false
+        label.numberOfLines = 3
         return label
     }()