* update solov2 some detail

* fix check paddle version

* fix version check error

* fix some comment

* add enable_static()

* follow comments

* remove blank line

* unify log_smooth_windows and log_iter

test=develop

* remove duplicate log_iter

* remain mobile yml, since they are soft-link

test=develop

* clean useless log in DataLoader

* fix infer set_sample_list_generator

* Update docs
* Update README.md

* update check config

* fix slim/xx

* Add latency table
* Add latency demo
* Update doc

* add blazeface nas demo

* fix format

* fix configs

* fix reduce_rate