GitLab

* fix link

* sync release version
Co-authored-by: Lijiao <15910218274@163.com>

Co-authored-by: liuzhe <zhe.liu@microsoft.com>

* create Dev homepage (#2101)

create dev homepage for lijiao

* Doc homepage (#2102)

update index

* update (#2413)
Co-authored-by: Lijiao <15910218274@163.com>

* Final doc (#2436)

* change font-family Segoe

* update
Co-authored-by: Lijiao <15910218274@163.com>

* chang font-family (#2438)

"Lato", segoe ui, "proxima-nova","Helvetica Neue",Arial,sans-serif

* update index.html (#2441)

* change font-family Segoe

* update
Co-authored-by: Lijiao <15910218274@163.com>

* change font-family Segoe (#2453)
Co-authored-by: Lijiao <15910218274@163.com>

* Update layout.html (#2469)

* change font-family Segoe (#2478)
Co-authored-by: Lijiao <15910218274@163.com>

* Update index.html (#2482)

* add chinese doc link (#2512)

* add chinese doc link

* update
Co-authored-by: Lijiao <15910218274@163.com>

* change link (#2519)
Co-authored-by: Lijiao <15910218274@163.com>

* update release version

* update wechat group QRcode

* update wechat image (#2533)

* update wechat image

* update link
Co-authored-by: Lijiao <15910218274@163.com>

* fix broken link (#2542)
Co-authored-by: Lijiao <15910218274@163.com>
Co-authored-by: Lijiaoa <61399850+Lijiaoa@users.noreply.github.com>
Co-authored-by: Lijiao <15910218274@163.com>

1. Reduce error message if deleted folder not exists.
2. Reduce unneccessary messages.
3. Organize logic better for reinstall scenario.

update wechat group qr code

Co-authored-by: liuzhe <zhe.liu@microsoft.com>

others

1. fix failed curve fitting UTs, due to code changes.
1. move all SDK UTs to tests folder, so that they can be run in default tests.
1. fix some deprecated ut assert function calls.

merge V1.6 back