Added new button to open the link of the message in browser or copy the link of the message.

Added "RSS: " for the forum feeds.
Parse the feedburner:origLink in the rss feed.
Moved download functions to a new class CURLWrapper for easy use.
Added two new functions (currently only for local feeds for testing):
- embed images into the message (works for Qt 4.7 and higher)
- save complete web page

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5399 b45a01b8-16f6-495d-af2f-9b41ad6348cc

plugins/FeedReader/gui/FeedReaderDialog.ui

@@ -268,8 +268,8 @@ border: 1px solid #CCCCCC;}</string>
          </widget>
         </item>
         <item row="4" column="0">
-         <layout class="QGridLayout" name="navFrame">
-          <item row="0" column="0">
+         <layout class="QHBoxLayout" name="horizontalLayout_3">
+          <item>
            <widget class="QLabel" name="msgLabel">
             <property name="sizePolicy">
              <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
@@ -289,7 +289,7 @@ border: 1px solid #CCCCCC;}</string>
             </property>
            </widget>
           </item>
-          <item row="0" column="1">
+          <item>
            <widget class="QLabel" name="msgTitle">
             <property name="styleSheet">
              <string notr="true">QLabel#msgTitle{
@@ -305,7 +305,21 @@ background: white;}</string>
             </property>
            </widget>
           </item>
-          <item row="0" column="2">
+          <item>
+           <widget class="QToolButton" name="linkButton">
+            <property name="icon">
+             <iconset resource="FeedReader_images.qrc">
+              <normaloff>:/images/Link.png</normaloff>:/images/Link.png</iconset>
+            </property>
+            <property name="popupMode">
+             <enum>QToolButton::MenuButtonPopup</enum>
+            </property>
+            <property name="autoRaise">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
            <widget class="QPushButton" name="expandButton">
             <property name="maximumSize">
              <size>