Merge pull request #9 from feugenix/master

issue 7: fix second commit apperance
libs: replace underscore with lodash

lodash is small and fast, now we use it.
Merge pull request #15 from gurugray/lodash

libs: replace underscore with lodash
libs: jquery minor update
img: get rid of images
color-scheme: update colors

we need a more contrast color scheme to show it with a projector
Merge pull request #16 from gurugray/color

color-scheme: update colors
svg: create marker only once

there is no need to create marker each time
Graph: get rid from jQuery

there is a way without jQuery
all I need it — read d3 documentation ;)

fix #3
Merge pull request #17 from gurugray/jquey

Graph: get rid from jQuery
index.css: typo fix
svg: reduce unneeded calculates

There is no gruoping in objects, so we do recalculate in each of them.

Added grouping element and calculating it position only.
Merge pull request #19 from gurugray/grouping

svg: reduce unneeded calculates
svg: reduce unneeded calculates

Added labels in to grouping element, so there is no need to calculate they
positions;
Merge pull request #20 from gurugray/labels

svg: reduce unneeded calculates
stage: fix label rendering

typo fix with right name of field