1)Merged the update charts functionality in initscatterchart function
2)Implemented the dynamic axis params,while initializing the charts we need the pass the parameters that required to display in and X and Y axis eg:

xAxisParams:[{lbl:'CPU (%)',key:'cpu',type:'float'},{lbl:'Instances',key:'instCnt'}]}};
Parameters are
"lbl" -  value displayed in the drop down
"key" -  key is used the look in the chart data
"type" - type of the value,if it is not present it will considered as the Integer
Conflicts:
	webroot/css/contrail.elements.css
Declared the variable which is missed in initial commit and null check while calling chart.update function

Change-Id: Iad897271faeacecd63be6ef15745377190cd1d10
Merge pull request #12 from vishnuvv/BugFix_featureDev

Bug fix feature dev