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Co-authored-by: jiahangxu <jiahangxu@microsoft.com>

* New Crowdin translations by Github Action

* remove removed files in en_US
Co-authored-by: Crowdin Bot <support+bot@crowdin.com>

As requirement of #2390 , removed multiphase from WebUI, document, and put all trials flatten on WebUI.

1. The major change is to split trial-jobs to trials in webui, and use parameter id as part of trial id.
2. If multiphase is enabled, the limitation of trial controls job count only, not trials actually.
3. When multiphase enabled, the trial status may not be right. Previous trials in a job will be marked as success, only last trial presents the job's status.
4. multiphase related documents and UX are removed.

minor changes,
1. Update dev document for webui development.

* modify docs

* "nni_search_space.json" -> "search_space.json"

* Add example of tuning RocksDB on NNI as well as its English and Chinese docs

* Update example of tuning rocksdb

* Update for example of RocksDB

* Revert "Update for example of RocksDB"

This reverts commit 89383937511674658520c3e7114c7a12e80cfcee.

* update

 New translations (Chinese Simplified) for v1.0

* squash commits in v1.0 first round bug bash

* support quniform in smac with "ordinal" in original smac

* Support stopping by port

* Doc for stopping by port