Added new option for GxsForums and FeedReader - Open all forums/feeds in new tab.

Option=on (standard)
- no standard tab
- new tab by single click
- no menu entry "Open in new tab"

Option=off:
- standard tab (not closeable)
- open in standard tab by single click
- menu entry "Open in new tab"
- open new tab with middle mouse button


git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6060 b45a01b8-16f6-495d-af2f-9b41ad6348cc

plugins/FeedReader/gui/FeedReaderConfig.ui

@@ -125,6 +125,13 @@
         </property>
        </widget>
       </item>
+      <item row="1" column="0">
+       <widget class="QCheckBox" name="openAllInNewTabCheckBox">
+        <property name="text">
+         <string>Open all feeds in new tab</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>