#7961

* [emmet] Support all the features

* Fix TSLint errors

* [emmet] Fix problem with CSS `url()` without quotes

* [emmet] Do not save files without a name

* [emmet] Clarifying the method name

* [emmet] Add Promise error handler

* [emmet] Correct support for paths

* Fix TSLint errors

* Space before the closing bracket.

* More guidelines

* [emmet] Add class BasicEmmetEditorAction

* Fix bad copyright statement

md extension should set baseUrl to document uri, webview should not override user baseUrl, fixes #7898

Addition of USE EXEC OPENQUERY syntax

Refactored PowerShell language definitions

Add an option to display control characters

Fix - instantiate was misspelled as instanciate