Merge pull request biolab#1808 from ales-erjavec/fixes/table-clipboard-copy

[FIX] Fix copy to clipboard in "Data Table" widget
(cherry picked from commit c4755ab)

Author: kernc

Orange/widgets/data/owtable.py

@@ -320,8 +320,8 @@ def table_selection_to_mime_data(table):
     """
     lines = table_selection_to_list(table)
 
-    csv = lines_to_csv_string(lines, dialect="excel")
-    tsv = lines_to_csv_string(lines, dialect="excel-tab")
+    csv = lines_to_csv_string(lines, dialect="excel").encode("utf-8")
+    tsv = lines_to_csv_string(lines, dialect="excel-tab").encode("utf-8")
 
     mime = QMimeData()
     mime.setData("text/csv", QByteArray(csv))
@@ -432,9 +432,8 @@ def __init__(self):
         self.tabs = gui.tabWidget(self.mainArea)
         self.tabs.currentChanged.connect(self._on_current_tab_changed)
 
-        copy = QAction("Copy", self, shortcut=QKeySequence.Copy,
-                             triggered=self.copy)
-        self.addAction(copy)
+    def copy_to_clipboard(self):
+        self.copy()
 
     def sizeHint(self):
         return QSize(800, 500)