Merge remote-tracking branch 'Gupta/master'
- AdminFilter changed to allow access back to Dashboard from
	 AllUsers.jsp page
- TODO:
	- Change queries to preparedStatment so as to avoid SQL Injection
- Filter working properly. 
- Session remains in the browser until logged out.
- Prepared Statement instead of statement API in Login.java
- TODO:
	- replace all those queries which are using statement API
		by preparedStatement API [leave those which don't require
		user input] to decrease the possiblity of SQL Injection
	- Other changes stated in
		https://github.com/anilkagak2/EventsMap/blob/master/newchanges-8April.txt
	- Make it final :)
Merge remote-tracking branch 'Anil Kag/master'