solid perf apprentice composite and 1 micro badge
fixed text in user expectations micro, added intro section to micro template
renamed micro badge, added link to it from main perf page
fixed url for micro badge link
commented out section about program that's not approved by council yet
added another link to suggested study - web
added perf-auditing micro
added link to audit on apprentice page
tidied up the user expectations badge a bit
added critical-render-path micro to perf apprentice
loosened number of required micros for perf apprentice
consistency fix
another consistency fix
added industry leader research micro badge
added explorer micro-badge, fixed consistency in other micros and apprentice
added skeleton for networking - caching micro-badge
Update _micro_network-and-caching.md
Merge pull request #13 from fs-webdev/perf

Perf (mostly done)