Merge pull request #255 from emorency/master

Calling new constructor of MongoDbDatasource
File related events renamed
OPAL-566 Download and delete authorizations added, multiple file download from a parent file added.
Update history with path only if project's file explorer is visible
OPAL-596 Recursive file deletion.
OPAL-566 Refactor file selection modal, single selection model applied.
OPAL-1964 File upload modal (and create folder modal) is handling FolderUpdatedEvent
Use new MongoDBDatasource constuctor
File upload modal styling
Dashboard view bootstrapified
Fix report icon
OPAL-1560 Copy/cut/paste file or folder added
OPAL-1560 Fix of file copy
OPAL-1560 PUT permissions added on project home
Code clean up and file selector returns secured file objects.
Merge pull request #256 from emorency/feature/OPAL-1945-HighCharts

OPAL-1945: Finishing up histogram charts for summary statistics and using trnaslation for jvm and stats charts
Fixing translations