* Added Unified connection support
* Use generic way to do expandNode.
Cleanup the ported code and removed unreference code. Added as needed later.
Resolved PR comments.
* Minor fixes and removed timer for all expanders for now. If any providers can't response, the tree node will spin and wait. We may improve later.
* Change handSessionClose to not thenable.
Added a node to OE to show error message instead of reject. So we could show partial expanded result if get any.
Resolve PR comments
* Minor fixes of PR comments
* working on formatting
* fixed basic lint errors; starting moving things to their appropriate location
* formatting
* update tslint to match the version of vscode we have
* remove unused code
* work in progress fixing layering
* formatting
* moved connection management service to platform
* formatting
* add missing file
* moving more servies
* formatting
* moving more services
* formatting
* wip
* moving more services
* formatting
* revert back tslint rules
* move css file
* add missing svgs
