Implemented comments from Paulus.

Revised main to use frontend and demo strings rather than importing
their domains.
Removed submodule validation.
Moved local library mounting to the bootstrap module and out of core.
Added requirements_all.txt for all dependencies.
Made core dependencies looser.
Small updates to setup.py.

requirements_all.txt

@@ -0,0 +1,120 @@
+# Required for Home Assistant core
+requests>=2,<3
+pyyaml>=3.11,<4
+pytz>=2015.4
+
+# Optional, needed for specific components
+
+# Sun (sun)
+astral==0.8.1
+
+# Philips Hue library (lights.hue)
+phue==0.8
+
+# Limitlessled/Easybulb/Milight library (lights.limitlessled)
+ledcontroller==1.0.7
+
+# Chromecast bindings (media_player.cast)
+pychromecast==0.6.10
+
+# Keyboard (keyboard)
+pyuserinput==0.1.9
+
+# Tellstick bindings (*.tellstick)
+tellcore-py==1.0.4
+
+# Nmap bindings (device_tracker.nmap)
+python-libnmap==0.6.3
+
+# PushBullet bindings (notify.pushbullet)
+pushbullet.py==0.7.1
+
+# Nest Thermostat bindings (thermostat.nest)
+python-nest==2.4.0
+
+# Z-Wave (*.zwave)
+pydispatcher==2.0.5
+
+# ISY994 bindings (*.isy994)
+PyISY==1.0.5
+
+# PSutil (sensor.systemmonitor)
+psutil==3.0.0
+
+# Pushover bindings (notify.pushover)
+python-pushover==0.2
+
+# Transmission Torrent Client (*.transmission)
+transmissionrpc==0.11
+
+# OpenWeatherMap Web API (sensor.openweathermap)
+pyowm==2.2.1
+
+# XMPP Bindings (notify.xmpp)
+sleekxmpp==1.3.1
+dnspython3==1.12.0
+
+# Blockchain (sensor.bitcoin)
+blockchain==1.1.2
+
+# MPD Bindings (media_player.mpd)
+python-mpd2==0.5.4
+
+# Hikvision (switch.hikvisioncam)
+hikvision==0.4
+
+# console log coloring
+colorlog==2.6.0
+
+# JSON-RPC interface (media_player.kodi)
+jsonrpc-requests==0.1
+
+# Forecast.io Bindings (sensor.forecast)
+python-forecastio==1.3.3
+
+# Firmata Bindings (*.arduino)
+PyMata==2.07a
+
+# Rfxtrx sensor (sensor.rfxtrx)
+https://github.com/Danielhiversen/pyRFXtrx/archive/ec7a1aaddf8270db6e5da1c13d58c1547effd7cf.zip
+
+# Mysensors
+https://github.com/theolind/pymysensors/archive/35b87d880147a34107da0d40cb815d75e6cb4af7.zip
+
+# Netgear (device_tracker.netgear)
+pynetgear==0.3
+
+# Netdisco (discovery)
+netdisco==0.3
+
+# Wemo (switch.wemo)
+pywemo==0.2
+
+# Wink (*.wink)
+https://github.com/balloob/python-wink/archive/c2b700e8ca866159566ecf5e644d9c297f69f257.zip
+
+# Slack notifier (notify.slack)
+slacker==0.6.8
+
+# Temper sensors (sensor.temper)
+https://github.com/rkabadi/temper-python/archive/3dbdaf2d87b8db9a3cd6e5585fc704537dd2d09b.zip
+
+# PyEdimax
+https://github.com/rkabadi/pyedimax/archive/365301ce3ff26129a7910c501ead09ea625f3700.zip
+
+# RPI-GPIO platform (*.rpi_gpio)
+# Uncomment for Raspberry Pi
+# RPi.GPIO ==0.5.11
+
+# Adafruit temperature/humidity sensor
+# uncomment on a Raspberry Pi / Beaglebone
+# http://github.com/mala-zaba/Adafruit_Python_DHT/archive/4101340de8d2457dd194bca1e8d11cbfc237e919.zip
+
+# PAHO MQTT Binding (mqtt)
+paho-mqtt==1.1
+
+# PyModbus (modbus)
+https://github.com/bashwork/pymodbus/archive/d7fc4f1cc975631e0a9011390e8017f64b612661.zip
+
+# Verisure (verisure)
+https://github.com/persandstrom/python-verisure/archive/9873c4527f01b1ba1f72ae60f7f35854390d59be.zip