2.2.1
[ImgBot] optimizes images \docs\_static\no.png (18.3%)) \docs\_static\touch-icon.png (64.21%)) \docs\_static\flaskr.png (8.32%)) \docs\_static\pycharm-runconfig.png (14.65%)) \docs\_static\debugger.png (2.79%)) \docs\_static\flask.png (30.15%)) \docs\_static\yes.png (13%)) \docs\_static\logo-full.png (29.33%))
update docs config
update pycharm instructions
