Consolidate frontend (home-assistant#9915)

* Consolidate frontend

* Remove home-assistant-polymer submodule

* Convert to using a pypi package for frontend

* fix release script

* Lint

* Remove unused file

* Remove frontend related scripts

* Move hass_frontend to frontend REQUIREMENTS

* Fix tests

* lint

* Address comments

* Lint + fix tests in py34

* Fix py34 tests again

* fix typo

Author: balloob

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "homeassistant/components/frontend/www_static/home-assistant-polymer"]
-	path = homeassistant/components/frontend/www_static/home-assistant-polymer
-	url = https://github.com/home-assistant/home-assistant-polymer.git

MANIFEST.in

@@ -1,5 +1,4 @@
 include README.rst
 include LICENSE.md
 graft homeassistant
-prune homeassistant/components/frontend/www_static/home-assistant-polymer
 recursive-exclude * *.py[co]

homeassistant/components/config/__init__.py

@@ -8,7 +8,6 @@
 from homeassistant.const import EVENT_COMPONENT_LOADED, CONF_ID
 from homeassistant.setup import (
     async_prepare_setup_platform, ATTR_COMPONENT)
-from homeassistant.components.frontend import register_built_in_panel
 from homeassistant.components.http import HomeAssistantView
 from homeassistant.util.yaml import load_yaml, dump
 
@@ -21,7 +20,8 @@
 @asyncio.coroutine
 def async_setup(hass, config):
     """Set up the config component."""
-    register_built_in_panel(hass, 'config', 'Configuration', 'mdi:settings')
+    yield from hass.components.frontend.async_register_built_in_panel(
+        'config', 'Configuration', 'mdi:settings')
 
     @asyncio.coroutine
     def setup_panel(panel_name):