laddr v2.2.0

• Hide empty link buttons on project pages (#107, #113)
• Add tags to user profile pages (#116, #119)
• Add tags and status columns to projects.csv export (#118, #120)
• laddr.io references updated to laddr.us (#121)
• Structure site.tpl to provide proper padding to bare templates and update select pages needing full-bleed to replace superblock (d3828c4)
• Apply consistent markup to template headers
• Use atomically-overridable personName subtemplate to centralize printing users' names
• Break config overrides into composite config scripts and event handlers
• Bootstrap markup and minor improvements applied to simple templates
• Add button and confirmation page template for deleting people
• Misc markup cleanup
• Column layout applied to user profile pages