Update engine.io(-client) to 1.3.1
Update node-static from 0.7.3 to 0.7.4
Update uglify-js from 2.4.12 to 2.4.15
Update eventemitter2 from 0.4.13 to 0.4.14
Update ipaddr.js from 0.1.2 to 0.1.3
Update iconv-lite from 0.2.11 to 0.4.4
Update spdy from 1.19.1 to 1.28.1
Update po2json from 0.2.3 to 0.3.0
Update jQuery from 1.11.0 to 1.11.1
Update backbone from 1.0.0 to 1.1.2
Jack Allnutt Update engine.io(-client) from 1.3.1 to 1.4.0
Merge pull request #586 from M2Ys4U/dep-update

Update dependencies