Naming samples and porting to Flask

[axelsrz]

Ported main samples from aiohttp to Flask. Rename and rearrange of samples to match BotBuilder-Samples.

fixes #212

[daveta]

pyyaml>=5.1

Curious if this is required?

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Refers to: samples/06.using-cards/requirements.txt:4 in 557f75c. [](commit_id = 557f75c, deletion_comment = False)

[daveta]

  "url": "https://docs.microsoft.com/en-us/azure/bot-service/?view=azure-bot-service-4.0"

Super low pri: FYI: You can remove the "en-us" and I believe it will redirect appropriately..

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Refers to: samples/13.core-bot/cards/welcomeCard.json:33 in 557f75c. [](commit_id = 557f75c, deletion_comment = False)

[daveta]

LUIS_API_KEY = ""

Should this have the env check stuff?
ie, os.environ.get("LuisAPIKey", "")

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Refers to: samples/21.corebot-app-insights/config.py:15 in 557f75c. [](commit_id = 557f75c, deletion_comment = False)

[daveta]

requests>=2.18.1

We might want to adopt a practice of putting a NOTICE.md (like here ).
Specifically, because requests has a dependency on a LGPL license.

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Refers to: samples/python_flask/21.corebot-app-insights/requirements.txt:3 in 557f75c. [](commit_id = 557f75c, deletion_comment = False)

[daveta]

-c "from model_corebot101.language_helper import LanguageHelper; lh = LanguageHelper(). lh.initialize_models(bert_model_dir='/model_runtime_api/model/bert', bidaf_model_dir='/model_runtime_api/model/bidaf')"

Doh! Not needed.

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Refers to: samples/experimental/101.corebot-bert-bidaf/Dockerfile_model_runtime:27 in 557f75c. [](commit_id = 557f75c, deletion_comment = False)

[axelsrz]

fixed comments @daveta

[daveta]

Awesome man! Thanks for doing this!