Visual Cues during Mark 1 Boot Sequence (#1308)

The Main focus of this release is creating visual feedback during the Mark 1 boot
sequence. The eyes and faceplate now provide indicators of the stage of the system:

• Spinning gray eyes
  The system just started, Arduino running and Pi booting
• Solid gray eyes
  Pi booted
• (Optional) Orange eyes, update message on faceplate
  Flashing new sketch to the Arduino
• Yellow eyes
  Mycroft starting, waiting on internet connection
• Yellow eyes, update message on faceplate
  Updating software from the web
• Blue eyes (or user selected color)
  Mycroft ready for use!

Additionally, the gray eye color and an update message will return during system upgrades.

Command Line Interface (CLI) (#1299)

Two new minor feature for the mycroft-cli-client:

• Ctrl+Right and Ctrl+L allow scrolling through the command line history
• New ':clear log' command cleans out the old log message from the display

Bugfixes

• Values in the settings.json were overwritten if skills initialize self.settings['key'] in init (#1304)
• Bad settingsmeta.json prevented skill from loading and showed a convoluted error. Now a useful message is logged with the JSON error message and the skill continues to load. (#1300)
• Add missing 'self.' in an obscure corner of the Enclosure code. Thanks JarbasAI! (#1302)
• The MycroftSkill.translate*() functions were not correctly rendering mustache values with 'double mustaches', such as "This a a {{value}}" (#1303)
• Fix Unicode issues in Portugese version of extract_datetime() utility. (#1301)
• Missing space in shell script prevented creation of a directory when switching to Github install in mycroft-use.sh utility (#1298)