Cleanup dashboard JS (#491)

* Cleanup dashboard JS

* Add vscode

* Save start_mark/end_mark

* Updates

* Updates

* Remove need for cv.nameable

It's a bit hacky but removes so much bloat from integrations

* Add enum helper

* Document APIs, and Improvements

* Fixes

* Fixes

* Update PULL_REQUEST_TEMPLATE.md

* Updates

* Updates

* Updates

esphome/py_compat.py

@@ -7,11 +7,15 @@ IS_PY3 = PYTHON_MAJOR == 3
 
 
 # pylint: disable=no-else-return
-def safe_input(line):
+def safe_input(prompt=None):
     if IS_PY2:
-        return raw_input(line)
+        if prompt is None:
+            return raw_input()
+        return raw_input(prompt)
     else:
-        return input(line)
+        if prompt is None:
+            return input()
+        return input(prompt)
 
 
 if IS_PY2: