Issue #45 Fix

Fix Approach:

It's quite the same as I've mentioned in the issue's comments. And I changed few things, Firstly, I changed the js file so that it can handle #name anchor. Secondly, I avoid connect signals in the EmailRow, instead, directly using the ConversationListBox constructor to do the connection. But I couldn't figure out how to properly use the Gtk.CoordinateTranslate though, it seems hard to get the web view out.

Since the anchor handle possibly have same #name anchor, so my thinking is to firstly try find unique id, then if no id could be found, then return the first element with the name satisfied.