reworked vagrantPrepare task
added vagrantExport task (a vagrantbox archove for students can now be created easily)

reworking configuration layout

reworked variable naming in bootstrap.sh

changes in postgresql configuration (every network host can authenticate now)

also added phpPgAdmin to bootstraph.sh of vagrantbox

changed buildtool from maven to gradle
using testNG instead of JUnit
adding vagrant testbox (including bootstrap file for fedora19 and centos6)
moving all tests to test folder (some were part of main folder)
some code refactoring according to checkstlye guidelines
added geoserver_conf from latest svn update in bozen svn repository

using gradle instead of maven