inactive-specs.js: Move css-counter-styles-3 to specs.js

* specs.js: Add symbol, symbolsType data types
* inactive-specs.js: Remove image, symbol, symbolsType data types
Update Display
specs.js: Add WebVTT
Update box-snap
inactive-specs.js: Add "Generated Content for Paged Media Level 4"
.jshintrc: Change "maxstatements" from 50 to 30
specs.js: Add "Motion Path Level 1"
Update "Web Animations 1.0"

* Change title from "Web Animations 1.0" to "Web Animations"