`dropout` 中， `updeconv` 未被更新

* fix init

* update

* fix mistake

* fix init

* update

* update_1.8

* update paddle.reader

* update data

* test=develop update one_hot usage according to 1.8

* test=develop update dataloader api by 1.8

* test=develop fix image shape

* test=develop update save load fluid.data

* take fluid.layers.data in place of fluid.data
* delete create_var_list_v2 func
* fix usage bug of fluid.data

* take fluid.layers.data in place of fluid.data
* delete create_var_list_v2 func

* API update of video model
* update api and refine bmn dygraph implementation
* refine Readme and config of bmn dygraph
* fix reademe and reader
* fix details

* fix init

* update

* update_1.8

* update paddle.reader

* add distributed training and gpu decoding and pre-processing of video

* Add document for DALI installation

* test=develop update one_hot usage according to 1.8

* test=develop update dataloader api by 1.8

* test=develop fix image shape

* fix init

* update

* fix

* add new cls link
* fix content
* fix cv readme
* fix moodels readme

* fix init

* update

* add fid_score for gan

* update readme

* fix models because the gradient clip strategy has been upgraded,test=develop

* fix models because the gradient clip strategy has been upgraded,test=develop

* fix ocr pretrain_model problem

* fix ocr pretrain_model problem

* update readme for paddlecv

* update readme for models

* update readme for models

* add links for plsc paddlslim

* update readme for paddlecv

* update readme for models

* update readme for models

* update image segmentation document
* Update README.md
* update image segmentation docs

* fit for new GradMaker & add 3D README. test=develop

* fix cls doc
* del dead link
* fix develop link
* add autodl link

* Update README.md

* Update README.md

* fix gpu num check bug

* fix face_detection grammatical errors (#4405)
Co-authored-by: NGuanghua Yu <742925032@qq.com>