Fixes commiting with empty author/email information

Also only filling in the author field works, git does magic then.
Also fix quoting

src/plugins/git/commitdata.cpp

@@ -61,9 +61,12 @@ void GitSubmitEditorPanelData::clear()
 QString GitSubmitEditorPanelData::authorString() const
 {
     QString rc;
-    rc += QLatin1Char('"');
     rc += author;
-    rc += QLatin1String("\" <");
+
+    if (email.isEmpty())
+        return rc;
+
+    rc += QLatin1String(" <");
     rc += email;
     rc += QLatin1Char('>');
     return rc;