* Add Junit test for ribbon's NIWSServerListClassName

* Add License Head to Code file

* try to solve submodule skywalking-ui conflict

Fixed the bug of the result of GC count in query of GC trend service always 0.

* Update How-to-release.md

* Update create_source_release.sh

* Update README.md

* Update README_ZH.md

Error rate alarm is not triggered

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* #1405
Add application id into service metric for the page jump from overview page to service page.

* Fixed test case error.

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Fixed the wrong usage of elasticsearch filter.

* #1393

The array data type of service name column are nested. Change the data type to be just a one-dimensional array.

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Prepare beta2 changelogs.

* #1207

Return true when segment parse throw exception to avoid parse the segment over and over again which read from buffer file.

* no message

* #1202

1. Determine the log is enabled for the DEBUG level before printing message.
2. Make the columns initialize to be static attribute.
3. Topology build optimize: Cache query result to avoid repeating queries.

* #1202

Add elasticsearch batch process setting into application.yml.

* #1202

Fixed check style error.

* #1202

Use XContentFactory to build source to insert into elasticsearch.

* support shardingjdbc database storage feature

* dependency and version should be defined in collector root pom.xml

* update the markdown file

* fix errors

* fix checkstyle errors

* add the Logger modifier "static" in pr #1347

* fix the issue #1376

* Remove all license files of Apache 2.0 libs. And add a missing one.

* Restore the Groovy and httpclientcomponent licenses, add a new section in License file for unstandard Apache 2.0 license.

* #1206

1. Support list data type attribute in streaming data.
2. Support multiple service names in segment duration index.

* Fixed the conflict.

* #1206

Add TODO description to notify linjiaqi.

* #1206

Remove @NotNull

* Add login filter

Username and password are stored in application.yml with
prefix "security.user"

* Modify startup script and add webapp.yml config file

* Update quick-start document for default login username/password

* Update deploy document for new webapp.yml config file

* Update license for new files.

* Create Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update README.md

Add link in menu. Also related to #1360

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Add Zipkin receiver

* add the Logger modifier "static" in pr 

* support shardingjdbc database storage feature

* Reorganize incubating and optional docs.

* Refactor English documents to guide end users.