[CDF-295] Compatibility breaks for Dashboards.context
	- added new functionality: ability to configure the desired Dashboard.context structure ( classic | new ) via settings.xml
[CDF-295] Compatibility breaks for Dashboards.context
	- legacy-dashboard-context defaults to 'false' should settings.xml not have that entry declared
Merge pull request #200 from pedrofvteixeira/CDF-295

[CDF-295] Compatibility breaks for Dashboards.context