refactor parcoords - using isContext and isPick instead of context & pick in line.js
refactor parcoords - using isContext and isPick instead of context & pick in line.js

aburato/plotly.js,aburato/plotly.js,plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js