Layout and build enhancements for Resources

+ All production-ready CSS and JS are in */build/ folders to make site
builds go a little smoother
+ Bartender menu script re-architected to account for many types of
filters
+ Moved the markup for flexbox sticky footers to be one level deeper
(not on the <body>). This fixes an issue where Drop.js dropdowns were
ridiculously slow on long pages in Firefox because of body
{display:flex;}
+ meta block (tags & bylines), pagination laid out with slightly less
complicated CSS
+ added data api to activate Bartender
+ added "Author" icon for Bartender
+ changed generic "filter" to more specific "Tag" (that's what you're
filtering)
+ fork Drop.js to add support for animations in slightly older webkit
browsers
+ custom jQuery build without Effects library (Velocity handles this)
+ Change from lodash.compat to lodash.mobile (slightly smaller file)