event chart nearly complete
refactoring d3chart.js + adding cpu, mem chart -> d3charts.js
Merge branch 'master' into d3
added cpu, mem graph. restructured the functions for better code revision and maintenance.
basic layout all complete.added jquery.js for temporary usage (has to be removed later).
changed color scheme to d3's color palette. Added tooltip on event chart (easily adaptable to other charts)
event/cpu/mem graph complete, synchronized transition between time-based axis and event-based axis complete
chart axis change function added
hard coding add