* 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
- Set markdown as language for markdown cell
- Fix issue where after loading language from cell metadata, always override it. This made the "language" feature irrelevant in the cell.
- Fixed tests with new behavior (assumption: cell-level language overrides notebook-level definition) and added new test to cover this too
