Changed ReportHelper to singleton. Added a new class to manage time series reports data.
Merge branch 'master' into agentMarketReports
Merge branch 'master' into agentMarketReports

Conflicts:
	src/main/java/org/investovator/ui/agentgaming/ReportHelper.java
Added report view to dashboard.
Added new Report type.
Added new helper methods to get timeseries reports.
Added ReportView class to display market reports.
Merge branch 'master' into agentMarketReports
market price timeseries works
Fixed a bug in indexes.
Added spread timeseries to report template.
Fixed a bug in getting reports.
Added Market Spread Chart to report view.
Removed unused imports.