fix thread-safety of hessian invoker
JFG-358 Bad report when target service is unavailable
guaranty that only one instance of hessian proxy is created per URL
Fix too much error messages, while registering agents
Fix JFG-378
Fix JFG-380
Fix right encode url. Add an ability to use custom percentiles in trends.
Merge pull request #176 from kgribov/webUI

Some hot fixes
[maven-release-plugin] prepare release parent-1.2.0-rc3
[maven-release-plugin] prepare for next development iteration
Merge pull request #162 from nmusienko/JFG-358

JFG-358 Bad report when target service is unavailable
ExactInvocationsClock fix
enable to set one invocation for multiple kernels
smoke-test . add simple http-query-provider/http-apache-invoker test
Merge pull request #180 from amikryukov/smoke-tests

smoke-test . add simple http-query-provider/http-apache-invoker test
Merge pull request #172 from nmusienko/agent

Fix too much error messages, while registering agents
Add an ability to use session trends in hyperlinks JFG-379
Merge pull request #181 from kgribov/webUI

Add an ability to use session trends in hyperlinks JFG-379
Merge pull request #178 from amikryukov/http-invoker

ExactInvocationsClock fix
Add some logs
Merge pull request #182 from kgribov/webUI

Add some logs