Prevent defaults from always being added

1. Moved default listener & broadcast addition to its own function.
2. applDefaults called from component-tray after adding component to DOM.
email rephrases and google font fix
typos and tweaks
Merge pull request #851 from Pomax/emailrefines

email rephrases and google font fix
removed iframe and improved install.html
lucida grande all the way
Merge pull request #853 from Pomax/noiframe

removed the install.html iframe
Merge pull request #838 from secretrobotron/set-defaults-when-new

Prevent defaults from always being added
followup fix
Merge pull request #855 from Pomax/installlocalization

followup fix
more prominent link and no mozlabs notice
Merge pull request #856 from Pomax/publishpanefix

more prominent link and no mozlabs notice
Replace placeholder text with finalized copy
Add line break to end of file
added proxy for remixing when prtcls don't match
fixed github proxy call
use simpler pipe-based proxy for remix
Merge pull request #862 from secretrobotron/mixed-content-workaround

Mixed content workaround
Merge pull request #861 from mmmavis/website-copy

Replace placeholder text with finalized copy
We want the HTML5 version of the embed

FYI, @mmavis.