Improve icon theme integration

src/icons.qrc

@@ -36,7 +36,6 @@
   <file>Icons/skin/arrow-right.gif</file>
   <file>Icons/skin/filterinactive.png</file>
   <file>Icons/skin/firewalled.png</file>
-  <file>Icons/skin/new.png</file>
   <file>Icons/skin/downloading.png</file>
   <file>Icons/skin/toolbox-divider.gif</file>
   <file>Icons/skin/stalledUP.png</file>
@@ -293,6 +292,7 @@
   <file>Icons/oxygen/edit-clear-history.png</file>
   <file>Icons/oxygen/edit-copy.png</file>
   <file>Icons/oxygen/folder-documents.png</file>
+  <file>Icons/oxygen/document-edit.png</file>
   <file>Icons/oxygen/insert-link.png</file>
   <file>Icons/oxygen/network-wired.png</file>
   <file>Icons/oxygen/mail-mark-read.png</file>

src/mainwindow.cpp

@@ -107,7 +107,7 @@ MainWindow::MainWindow(QWidget *parent, QStringList torrentCmdLine) : QMainWindo
   actionSet_download_limit->setIcon(QIcon(QString::fromUtf8(":/Icons/skin/download.png")));
   actionSet_global_upload_limit->setIcon(QIcon(QString::fromUtf8(":/Icons/skin/seeding.png")));
   actionSet_global_download_limit->setIcon(QIcon(QString::fromUtf8(":/Icons/skin/download.png")));
-  actionCreate_torrent->setIcon(QIcon(QString::fromUtf8(":/Icons/skin/new.png")));
+  actionCreate_torrent->setIcon(misc::getIcon("document-edit"));
   actionAbout->setIcon(misc::getIcon("help-about"));
   actionBugReport->setIcon(misc::getIcon("tools-report-bug"));
   actionDecreasePriority->setIcon(misc::getIcon("go-down"));