make sonar property value set via system property win over value set in build script
add sonarRunner->test task dependency
revised sonar user guide docs
added samples for sonarRunner plugin
added sonarRunner plugin to TOC
sonar runner doc enhancements
REVIEW-1295: mention refactored test report generation in release note.
Introduced AbstractPerformanceTest.
Run all performance tests against 1.0, 1.4 and latest (if latest is not one of these). Use a single execution time and heap consumption threshold for all versions.
collect results for all performance test runs in a text file.
use libraries.jsoup instead of a specific version of jsoup.
Some tweaks to contributions section.
more sonar runner doc enhancements
separate smoke test for Sonar Runner plugin
sonar doc and sample fixes
make sonarRunner task depend on test task of all java projects
fixed gradle invocations in Sonar(Runner)SmokeIntegrationTest
sonar integ test fixes
sonar integ test fixes
Revert "sonar integ test fixes"

This reverts commit 583bce66b4f2138e31f8ec4bf637a02e11a60cbe.