Updates

Upgrades:

• purecss to 1.0.1
• paho-mqtt to 1.1.0

Fixes/content update:

• convert lines with tab indentation to space
• update alpine urls
• update copyright - use js to write the year

Visual/viability:

• move mqtt_status to below h1 as h2
• center table header text and use sentence case
• add build and home to the cross site menu
• move pkgs url left to elevate exposure