* provides a optional-plugin for tracking ignores enhancement(#1203)

* trace ignore plugin config support override by system.env

* optimize the trace ignore plugin and make normalization of pom

* add AntPathMatcher and an junit test for it

* No longer rely on the spring framework

* add license at file header

* rebuild pom and rewrite README

* rebuild optional-plugins pom

* clean up useless code

* modify junit

* rewrite the ant path match logic

* rename the matcher class

* add the trace ignore plugin introduce doc to incubating features menu.

* modify the README doc.

* remove Chinese in English doc.

* remove superfluous content of EN-doc.

* Update README.md

* Fixing #1231. Adding order and status to trace query.

* Fixing 1231. Using enum for traceState and queryOrder

* Incorporating code review suggestions

* provides a optional-plugin for tracking ignores enhancement(#1203)

* trace ignore plugin config support override by system.env

* optimize the trace ignore plugin and make normalization of pom

* add AntPathMatcher and an junit test for it

* No longer rely on the spring framework

* add license at file header

* rebuild pom and rewrite README

* rebuild optional-plugins pom

* clean up useless code

* modify junit

* rewrite the ant path match logic

* rename the matcher class

Add folder lock to collector's buffer folder.

* Adjust release doc and script based on last release vote.

* Update UI declaimer file.

* Update create_source_release.sh

* Update How-to-release.md

* rewrite http-async-client

* add unit test and document

* fix check style issue

* update test

* update doc fix ci

* fix review

fix wrong description for chinese document

* Change the buired point of block call way

* Support future way and change the operation name of span

* New english readme.

* New chinese readme.

* update faq doc

* update faq

* update faq

* Update UI licenses for beta version

Fix a format issue.

* Update CHANGES.md

* Update How-to-build-CN.md

* Update How-to-build.md

* Register table description.

* Update Collector-Table-Description.md

Review and update the docs

* Update Collector-Table-Description.md

* Test link.

* Update Collector-Table-Description.md

* Tables of JVM Metric related finish.

* Table description finish.

* Update Collector-Table-Description.md

* Update Collector-Table-Description.md

* Module class rename to ModuleDefine, Module is the JDK9 class.

* Revert "Module class rename to ModuleDefine, Module is the JDK9 class."

This reverts commit 097665b97ea53b27565e362d28c2e8202710f4cd.

* Modify short column name.

* Modify the description of transaction metrics.

* Add section about collector table description in readme.

* Do not get alarm metric for overview and application topology.

* Delete server and service alarm metric only.

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

Module class rename to ModuleDefine, Module is the JDK9 class. It is conflict with our Module class. (#1168)

Delete buffer directory when collector restart.

* Rename thermodynamic attributes.

* A missing attribute name.