Added the price graph for the asset.
If you hover the cell containing the name of the asset, a price chart will be displayed at the right of the cell.
Added key statistics feature.
If you (left) click on the symbol of the asset in the basket, you can see the key statistics for that asset.
Added target return feature.
You can set the annual target return. The default is 0%: it means the target return is calculated as the mean of the asset returns. Now "constraints are inconsistent, no solution!" alert is displayed when there is no solution with the given constraints or target return.
As the constraints, the target return is not reset when you change the basket.
Moved to server side the price downloading process.
Fixed the basket restore, containing assets with strange charaters in the name, for instance, ^DJI.