Initial UI dashboard added for visibility

Initial UI dashboard added for visibility

- Add foundation, jquery and jquery-ui open source js/css
packages for skin, layout and AJAX
- Add plotly and candela js open source graphing packages
- Build core visibility view and provide toplevel templates,
headers, menu navigation, etc.
- Update collector/visibility APIs to align to latest Spark
analytics and UI requirements
- Refresh page elements at 5 second interval.
- Visibility controls to stop continual page refresh and clear
visibility.
- Multi-select and update service set to analyze.
- System count updates for tracing, spans, metrics schemas.
- Min/max/avg response times per service (aggregate) table.
- Graphs for: per service request counts, user-agent percentages,
per service/URL counts, per URL/status code counts, per URL counts
- Tabs for distinct URLs, status codes, user-agents, upstream cluster,
operation names, nodeids (service names)
- Table for metrics counters specified in visibility configuration.
- Metrics over time scatter plots for tracked metrics.

Change-Id: Ie3ea12fd32e0274ac52f78becc4a56c4c4134660
Signed-off-by: earrage <eddie.arrage@huawei.com>