* First crack tsql notebook (no output rendered yet)
* getting messages back
* intellisense working first cell, no connection errors
* sql notebook cell output functioning
* Latest SQL noteobook changes
* Undo change to launch.json
* Plumbing providers through
* Kernels shown from multiple providers, can switch between them. No mementos yet
* Ensure we have a feature flag for SQL notebooks, ensure existing functionality still works
* Fix tslint duplicate imports issue
* Addressing PR comments
* second round of PR feedback to cleanup notebook service manager code
* merge latest from master
Full plumb through of Session support. Also fixed some test issues
- Load session and get necessary information in kernels list
- Run Cell button now works as expected
- Added a ToggleAction base class which can be used for anything that switches icons. I'd still prefer to have this be dynamic and as clean as the extension classes
- Fixed account test unhandled promise rejections (caused by incorrect / invalid tests) that made it hard to see all the test run output.
* Initial toolbar work
- This is in-progress and needs additional fixes
* Resolve PR comments
* Added empty kernel and hook up with Kernel dropdown
* Resolve PR comments
