Merge branch 'hotfix/fix_authors'
#5: updated senders for new interface proposal
defined reporter and destination contracts, abstract reporter, mostly switched perfcake to the new reporting
updated ScenarioParser to be able to parse new reporting and created a test for it.
configured server.host and server.port properties
Added all http methods to HTTPSender
Added support for default values in scenarios (property filtering)
ImmediageMessageGenerator and LongtermMessageGenerator fixed message passing to senders
docs: user guide moved to a separate repository (PerfCake/UserGuide)
generator, validator, sender, reporter, destination can now specify full package
updated readme
split of configuration handling into multiple classes
fixed url resource parsing, draft of new object factory
object summoning and test, hot hack-fix for reporters exception handling
switched to pojo property setup
message attributes filtering
Removed execution and performance elements from scenario XML, updated XSD abd created ScenarioParser test.
classes from org.perfcake.message.generator.types package and org.perfcake.util.LinearRegression.java moved to org.perfcake.reporting.util package
'address' property renamed to 'target'
messages now can have references to multiple validators using validatorRef element