Added few dependencies in package.json
1. Added isScatterChartInitialized function which checks whether the
   given selector is already initilizaed with scatterChart
2. Simplified the URL hash parameters for infra node summary/detail pages
Earlier,the URL is
   https://localhost:8143/tenants/monitor/network#p=mon_infra_control&q[tab]=&q[node]=Control Nodes:nodeh7
changed to
   https://localhost:8143/tenants/monitor/network#p=mon_infra_control&q[tab]=&q[node]=nodeh7
Merge pull request #113 from nagakiran/infraDashboardChanges

Infra dashboard changes