default gitignore
added exchange option
md5 encoding passwords
exchange form in exchange.html
exchange.jsp for user's exchange
added exchange option with viewing to user and not viewing to anon, email send work
radiobutton has been changed - no style, only functionality
Merge branch 'develop' of github.com:7bits/natural-exchange into develop

Conflicts:
	src/main/java/it/sevenbits/controller/AdvertisementController.java
	src/main/resources/local/import.sql
added popup window to exchange option, added validator to exchange form