PDF Output: Option to control title of generated Table of Contents

Fixes #1245076 [[Enhancement] Add PDF TOC Title, More Margin Options and ePub TOC Heading 1](https://bugs.launchpad.net/calibre/+bug/1245076)

src/calibre/ebooks/conversion/plugins/pdf_output.py

@@ -112,6 +112,9 @@ class PDFOutput(OutputFormatPlugin):
         OptionRecommendation(name='pdf_add_toc', recommended_value=False,
             help=_('Add a Table of Contents at the end of the PDF that lists page numbers. '
                    'Useful if you want to print out the PDF. If this PDF is intended for electronic use, use the PDF Outline instead.')),
+        OptionRecommendation(name='toc_title', recommended_value=None,
+            help=_('Title for generated table of contents.')
+        ),
         ])
 
     def convert(self, oeb_book, output_path, input_plugin, opts, log):

src/calibre/ebooks/pdf/render/toc.py

@@ -64,7 +64,7 @@ def toc_as_html(toc, pdf, opts):
             )
         ),
         BODY(
-            H1(_('Table of Contents')),
+            H1(opts.toc_title or _('Table of Contents')),
             TABLE(),
         )
     )

src/calibre/gui2/convert/pdf_output.py

@@ -23,7 +23,7 @@ class PluginWidget(Widget, Ui_Form):
             'preserve_cover_aspect_ratio', 'pdf_serif_family', 'unit',
             'pdf_sans_family', 'pdf_mono_family', 'pdf_standard_font',
             'pdf_default_font_size', 'pdf_mono_font_size', 'pdf_page_numbers',
-            'pdf_footer_template', 'pdf_header_template', 'pdf_add_toc',
+            'pdf_footer_template', 'pdf_header_template', 'pdf_add_toc', 'toc_title',
         ])
         self.db, self.book_id = db, book_id
 

src/calibre/gui2/convert/pdf_output.ui

@@ -232,6 +232,19 @@
      </property>
     </widget>
    </item>
+   <item row="8" column="1">
+    <widget class="QLineEdit" name="opt_toc_title"/>
+   </item>
+   <item row="8" column="0">
+    <widget class="QLabel" name="label_14">
+     <property name="text">
+      <string>&amp;Title for ToC:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_toc_title</cstring>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <resources/>