migrate from flask to quart.

also remove all flaskiness from static file serving.
and reference all vendored scripts on the base tempĺate for simplicity.

requirements.txt

@@ -1,30 +1,38 @@
-bech32==1.2.0; python_version >= '3.5'
+aiofiles==0.5.0
+bech32==1.2.0
 bitstring==3.1.7
+blinker==1.4
 brotli==1.0.9
 cerberus==1.3.2
 certifi==2020.6.20
 chardet==3.0.4
-click==7.1.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+click==7.1.2
 ecdsa==0.16.0
 environs==8.0.0
-flask-assets==2.0
-flask-compress==1.5.0
-flask-cors==3.0.9
-flask-talisman==0.7.0
-flask==1.1.2
-idna==2.10; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-itsdangerous==1.1.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-jinja2==2.11.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+h11==0.10.0
+h2==3.2.0
+hpack==3.0.0
+hypercorn==0.10.2
+hyperframe==5.2.0
+idna==2.10
+itsdangerous==1.1.0
+jinja2==2.11.2
 lnurl==0.3.5
-markupsafe==1.1.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-marshmallow==3.7.1; python_version >= '3.5'
-pydantic==1.6.1; python_version >= '3.6'
+markupsafe==1.1.1
+marshmallow==3.7.1
+priority==1.3.0
+pydantic==1.6.1
 pyscss==1.3.7
 python-dotenv==0.14.0
+quart==0.13.1
+quart-compress==0.2.1
+quart-cors==0.3.0
 requests==2.24.0
+secure==0.2.1
 shortuuid==1.0.1
-six==1.15.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-typing-extensions==3.7.4.3; python_version < '3.8'
-urllib3==1.25.10; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'
-webassets==2.0
-werkzeug==1.0.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+six==1.15.0
+toml==0.10.1
+typing-extensions==3.7.4.3
+urllib3==1.25.10
+werkzeug==1.0.1
+wsproto==0.15.0