Remove dependancy on javax.servlet

[akalsey]

From http://twitter.com/#!/infynyxx/status/70228722078322688 "hey @tropo your Java library's dependency on javax.servlet is not so cool; it's bloated; How about only using apache http client?"

[mpermar]

Hey. The dependency has a "provided" scope which means that the app server will provide the actual jar file. That's the standard and nice way to develop servlet based apps.

HttpClient is just a library to access http servers from Java. Two different things. In fact, we use Http Client :)