Merge pull request #966 from am11/master

Code: Reuses a variable
Merge pull request #967 from am11/master

Feature: SCSS to get remaining extract commands
CSS: Invalid path check. Fixed #971
CSS: Support for relative URIs/file names
Intellisense: Added inheritance support. (#495)
* New feature added.
* Works for both TypeScript and JavaScript.
Merge pull request #972 from am11/Intellisense-inheritance

CodeGeneration: Added inheritance support for intellisense (#495)
Compiler: Rectify maps before deleting.
* Until hcatlin/libsass#242 is fixed.