Added moment.fn.isoYear and format tokens
Changed isoYear to isoWeekYear
Added tests for isoWeekYear
Added iso year formatting tests
Added weekYear with format gg/gggg/ggggg
Added weekday and isoWeekday with format tokens e/E
Fixed jshint issues in moment.js
Added tests for the (iso)weekday functions
Fixed test/lang to take into account e/E format token