PDC core versions 911-912

[Alexei B.]

Mostly ARV changes:
- Added button to save the list of reports to CSV
- Added button to save the report to HTML file to a desired location
- Re-worked reports so that a notification is seen, when an incorrectly re-saved report is opened.
- Slightly changed coloring for reports with lots of failed resources (planning to divide fails due to a client computer from those generated by servers)
- New graph in reports, mouseover highlights top source for a selected section.
- Added a new panel below and changed elements distribution. More elements to come.