MouseClick on Project Explorer, Popupwindow and username inclusion in Events

* Previously when we clicked on Project explorer window we could not differentiate teh clicks with which file or project or pakaages has been selected. I wrote a selection listern which will listen to the project explorer window and see the seelction at particular point of the project explorer.
* Similarly We could not identify the popup window clicks on top of the their tab changes as well. I write a code to see if there is any popup window opened over the editor if that which tab is curently opened if there is any tab on that.
* Many events like, keboard events, menubarclick event, resourcechange events and many others lacked the username information. I added that in each of the events to get a better mapping with user.