* modify write_docs_cn, write_docs_en, include specifications about python 2.7.15 and creating  virtual env with conda

* gitignore update

* revert .gitignore;  update write_docs

* icafe DLTP-1328, stress  exe.close()

* DLTP-1383 不可迭代更正

* DLTP-1404 修复动态图文档中每段代码的格式和大小都不一样

* DLTP-1390 Pyreader中文显示格式问题

* DLTP-1393 无效链接

* DLTP-1421 paddle.fluid.layers.reduce_max中文翻译有问题

* DyGraph 调整标签结构

* modify write_docs_cn, write_docs_en, include specifications about python 2.7.15 and creating  virtual env with conda

* gitignore update

* revert .gitignore;  update write_docs

* add python inference api doc

* new python op doc,test=develop

* fix typo, test=develop

* modified lrn formula

* modified design idea

* Update fluid_design_idea.md

* Update fluid_design_idea.md

* add contribute faq

* refine with comments

* Add lod specs

* Update op notes

* Update lod specs

* add infer shape

* fix bug

* fix example; test=develop

* fix language; test=develop

* fix format error

* fix error

* fix error

* fix typo

* Update native_infer.md

* Update paddle_tensorrt_infer_en.md

* Update paddle_tensorrt_infer_en.md

* Update doc/fluid/advanced_usage/deploy/inference/paddle_tensorrt_infer_en.md
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update paddle_tensorrt_infer_en.md

* Update paddle_tensorrt_infer_en.md

* hotfix deadlink (#811)

* Update native_infer_en.md (#787)

* Update install_Windows_en.md (#790)

* Update install_Windows_en.md

* Update install_Windows_en.md

* Update cluster_howto_en.rst (#791)

* Update cluster_howto_en.rst

* Update cluster_howto_en.rst

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update cluster_howto_en.rst

* Update index_cn.rst (#813)

* Update native_infer_en.md

* Update native_infer_en.md

* recheck_structure&fix_typo

* fix_structure

* adjust_dist_structure

* fix_deadlink

* fix deadlink

* Add document for PaddleSlim.

* Fix paddle_slim.md

* Fix url

* deadlink0325

* update

* add gpu dist train best practice

* fix styles

* update

* update

* update_book_commitid

* commitid0309

* fix typo

* Update fluid_design_idea.md

* Update fluid_design_idea_en.md

* Tables_rm_op

* update_op

* update_index

* synchronize with develop (#642)

* update_commitid1.3 (#641)

* update inference c++ API doc (#634)

* update inference c++ API doc

* fix link

* thorough clean for doc (#644)

* thorough clean

* delete_DS_Store

* Cherrypick1.3 (#652)

* thorough clean

* delete_DS_Store

* [Don't merge now]update_install_doc (#643)

* update_install_doc

* follow_comments

* add maxdepth (#646)

* upload_md (#649)

* update_version (#650)

* Translation of 16 new apis (#651)

* fix_windows

* Final update 1.3 (#653)

* thorough clean

* delete_DS_Store

* update_1.3

* Deadlink fix (#654)

* fix_deadlinks

* update_docker

* Update release_note.rst

* Update index_cn.rst

* update_Paddle (#658)

* fix pic (#659)

* [to 1.3] cn api debug (#655) (#661)

* debug

* fix 2 -conv2d

* "锚" ==> anchor(s)

* fix_windows

* Final update 1.3 (#653)

* thorough clean

* delete_DS_Store

* update_1.3

* thorough clean

* delete_DS_Store

* update inference c++ API doc

* fix link

1. add index for all English version of "进阶使用"
2. replace legacy softlinks to howto/optimization & dev/new_op_en with original file

* host_memo_profile

* Update host_memory_profiling_en.md

* Review

* upload write_docs_en.md

* Textual Review

* fix link ref

* upload op_notesen

* Review

* review2