[servlets] Initial commit.
[servlets] (bug-fix:major) Solved 'undefined variable: filter' and 'undefined variable: display' errors (did not get the relative parameter values).
[servlets] (bug-fix) HTML document type definition was not conformant to W3C standard
Merge branch 'master' of https://github.com/sguazt/RUBBoS into servlets-dev
[servlets] (bug-fix) Replaced use of deprecated method 'URLEncoder.encode(String)' with 'URLEncoder.encode(String,String)', using 'UTF-8' as default encoding.
[servlets] (bug-fix) Replaced use of deprecated method 'URLEncoder.encode(String)' with 'URLEncoder.encode(String,String)', using 'UTF-8' as default encoding.
[servlets] (bug-fix) Replaced use of deprecated method 'URLEncoder.encode(String)' with 'URLEncoder.encode(String,String)', using 'UTF-8' as default encoding.
Merge branch 'servlets-dev'