Switch to Gravatar for team Avatars

Since Twitter sucks and blocked our
access lets dump their usage entirely
in favor of gravatar hosting

*Some of the email addresses will need to be updated

Change-Id: I36841d22734efab22fe4b622dc014e3bacee8e81
Fixed FC when delete LED "+App"

Change-Id: Ice15aa6c915726cff506d3da00c69b798ae6f8b6