Report: Make <th> elemnts bold in report_table

Author: nikicc

Orange/canvas/report/index.html

@@ -70,6 +70,10 @@
         padding: 2px 6px 2px 6px;
     }
 
+    th {
+        font-weight: bold;
+    }
+
     @media screen {
         td, th {
             white-space: nowrap;

Orange/canvas/report/report.py

@@ -241,7 +241,7 @@ def data(role=Qt.DisplayRole,
                     bgcolor = 'transparent'
 
                 font = data(Qt.FontRole)
-                weight = 'bold' if font and font.bold() else 'normal'
+                weight = 'font-weight: bold;' if font and font.bold() else ''
 
                 alignment = data(Qt.TextAlignmentRole) or Qt.AlignLeft
                 halign = ('left' if alignment & Qt.AlignLeft else
@@ -254,7 +254,7 @@ def data(role=Qt.DisplayRole,
                         'color:{fgcolor};'
                         'border:{border};'
                         'background:{bgcolor};'
-                        'font-weight:{weight};'
+                        '{weight};'
                         'text-align:{halign};'
                         'vertical-align:{valign};">{text}</{tag}>'.format(
                             tag='th' if row is None or col is None else 'td',