added `ins` element style correction for both semantic and presentational purpose
updated Normalize CSS to v3.0
minor adjustments
updated jQuery to v2.1.0
added `!default` flag for variable configuration
oops…
better memory control
fixed the bug that puts `<rt>` after (instead of inside) `<rtc>`

found on Cordova Android, originally fixed by @audreyt on
audreyt/moedict-webkit, commit f49ecb3e900916f43e1656c3cdf5786ba4461a06
added back line height for article
applied indentation with 4 spaces